U.S. patent application number 15/203906 was filed with the patent office on 2016-10-27 for dpp-iv inhibitor combined with a further antidiabetic agent, tablets comprising such formulations, their use and process for their preparation.
The applicant listed for this patent is Boehringer Ingelheim International GmbH. Invention is credited to Michael BRAUN, Kenji EGUSA, Thomas FRIEDL, Hikaru FUJITA, Megumi MARUYAMA, Takaaki NISHIOKA.
Application Number | 20160310435 15/203906 |
Document ID | / |
Family ID | 39714040 |
Filed Date | 2016-10-27 |
United States Patent
Application |
20160310435 |
Kind Code |
A1 |
FRIEDL; Thomas ; et
al. |
October 27, 2016 |
DPP-IV INHIBITOR COMBINED WITH A FURTHER ANTIDIABETIC AGENT,
TABLETS COMPRISING SUCH FORMULATIONS, THEIR USE AND PROCESS FOR
THEIR PREPARATION
Abstract
The present invention relates to pharmaceutical compositions
comprising fixed dose combinations of a DPP-4 inhibitor drug and a
partner drug, processes for the preparation thereof, and their use
to treat certain diseases.
Inventors: |
FRIEDL; Thomas;
(Ochsenhausen, DE) ; BRAUN; Michael; (Senden,
DE) ; EGUSA; Kenji; (Biberach an der Riss, DE)
; FUJITA; Hikaru; (Osaka-city, JP) ; MARUYAMA;
Megumi; (Hyogo, JP) ; NISHIOKA; Takaaki;
(Kobe, JP) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Boehringer Ingelheim International GmbH |
Ingelheim am Rhein |
|
DE |
|
|
Family ID: |
39714040 |
Appl. No.: |
15/203906 |
Filed: |
July 7, 2016 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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14836996 |
Aug 27, 2015 |
9415016 |
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15203906 |
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12935634 |
Dec 3, 2010 |
9155705 |
|
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PCT/EP2009/053978 |
Apr 2, 2009 |
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14836996 |
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61087343 |
Aug 8, 2008 |
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
A61K 9/2031 20130101;
A61K 9/282 20130101; A61K 45/06 20130101; A61K 9/0053 20130101;
A61P 37/06 20180101; A61K 9/2813 20130101; A61K 31/155 20130101;
A61P 3/10 20180101; A61K 9/209 20130101; A61K 9/2054 20130101; A61K
9/2095 20130101; A61P 19/02 20180101; A61K 9/2077 20130101; A61K
9/2027 20130101; A61K 31/522 20130101; A61K 9/1617 20130101; A61K
31/522 20130101; A61K 9/2059 20130101; A61P 3/04 20180101; A61K
9/2086 20130101; A61K 31/155 20130101; A61K 9/2866 20130101; A61P
43/00 20180101; A61K 9/2013 20130101; A61K 9/1652 20130101; A61K
9/2009 20130101; A61P 19/10 20180101; A61P 29/00 20180101; A61K
9/28 20130101; A61K 2300/00 20130101; A61K 2300/00 20130101 |
International
Class: |
A61K 9/28 20060101
A61K009/28; A61K 31/155 20060101 A61K031/155; A61K 9/20 20060101
A61K009/20; A61K 31/522 20060101 A61K031/522 |
Foreign Application Data
Date |
Code |
Application Number |
Apr 3, 2008 |
EP |
08154039.5 |
Claims
1. A pharmaceutical composition comprising or made from: (a)
1-[(4-methyl-quinazolin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-(3-(R)-a-
mino-piperidin-1-yl)-xanthine in a dosage of 2.5 mg or 5 mg, (b)
metformin hydrochloride, (c) one or more pharmaceutical excipients,
and (d) a basic amino acid having an intramolecular amino group and
alkaline characteristics, wherein the pharmaceutical composition is
a tablet comprising a film-coat; and wherein the pharmaceutical
composition comprises the following amounts (% by weight of total
coated tablet mass): 0.1-0.5% of
1-[(4-methyl-quinazolin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-(3-(R)-a-
mino-piperidin-1-yl)-xanthine, and 47-85% of metformin
hydrochloride.
2. The pharmaceutical composition according to claim 1, wherein
1-[(4-methyl-quinazolin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-(3-(R)-a-
mino-piperidin-1-yl)-xanthine is stabilized against chemical
degradation.
3. The pharmaceutical composition according to claim 1, wherein the
basic amino acid having an intramolecular amino group and alkaline
characteristics is selected from L-arginine, L-lysine and
L-histidine.
4. The pharmaceutical composition according to claim 1, wherein
1-[(4-methyl-quinazolin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-(3-(R)-a-
mino-piperidin-1-yl)-xanthine is present in a dosage strength of 5
mg.
5. The pharmaceutical composition according to claim 1, wherein
1-[(4-methyl-quinazolin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-(3-(R)-a-
mino-piperidin-1-yl)-xanthine is present in a dosage strength of
2.5 mg.
6. The pharmaceutical composition according to claim 1, wherein
metformin hydrochloride is present in a dosage range from about 100
mg to about 1500 mg.
7. The pharmaceutical composition according to claim 6, wherein
metformin hydrochloride is present in a dosage strength of 250,
500, 625, 750, 850, or 1000 mg.
8. The pharmaceutical composition according to claim 6, wherein
metformin hydrochloride is present in a dosage strength of 500 mg,
850 mg, or 1000 mg.
9. The pharmaceutical composition according to claim 1, wherein the
basic amino acid having an intramolecular amino group and alkaline
characteristics is L-arginine.
10. The pharmaceutical composition according to claim 9, wherein
L-arginine is present from about 1 mg to about 25 mg.
11. The pharmaceutical composition according to claim 9, wherein
L-arginine is present from about 1 mg to about 50 mg.
12. The pharmaceutical composition according to claim 9, wherein
1-[(4-methyl-quinazolin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-(3-(R)-a-
mino-piperidin-1-yl)-xanthine and L-arginine are present in a
weight ratio from about 1:20 to about 10:1.
13. The pharmaceutical composition according to claim 9, wherein
1-[(4-methyl-quinazolin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-(3-(R)-a-
mino-piperidin-1-yl)-xanthine and L-arginine are present in a
weight ratio from about 1:15 to about 10:1.
14. The pharmaceutical composition according to claim 9, wherein
1-[(4-methyl-quinazolin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-(3-(R)-a-
mino-piperidin-1-yl)-xanthine and L-arginine are present in a
weight ratio from about 1:10 to about 10:1.
15. The pharmaceutical composition according to claim 1, wherein
the excipients are selected from the group consisting of one or
more fillers, a binder, a lubricant, and a glidant.
16. The pharmaceutical composition according to claim 1, comprising
copovidone as binder.
17. The pharmaceutical composition according to claim 16, further
comprising one or more of the following: the filler corn starch,
the lubricant magnesium stearate, and the glidant colloidal
anhydrous silica.
18. The pharmaceutical composition according to claim 1, wherein
the tablet is a mono-layer tablet.
19. The pharmaceutical composition according to claim 1, wherein
the film-coat comprises a film-coating agent, a plasticizer,
optionally a glidant, and optionally one or more pigments.
20. The pharmaceutical composition according to claim 1, in which
the pharmaceutical composition is a mono-layer tablet, wherein one
or more of the following applies: the percentage of metformin
hydrochloride is about 85% by weight of total tablet core, the
percentage of DPP-4 inhibitor is about 0.2%-0.4% by weight of total
tablet core, the percentage of L-arginine is about 2% by weight of
total tablet core, the tablet crushing strength is higher than or
equal 100 N, the tablet friability is lower than or equal 0.5%, the
tablet thickness is from about 5.7 to about 8.4 mm, the tablet core
weight is from about 590 to about 1180 mg, and the tablet
disintegration time is lower than or equal 15 minutes.
21. The pharmaceutical composition according to claim 1, which is
an immediate release dosage form, characterized in that in a
dissolution test after 45 minutes at least 75% by weight of each of
the active ingredients is dissolved.
22. A solid pharmaceutical composition which is a mono-layer tablet
comprising:
1-[(4-methyl-quinazolin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-(3-(R)-a-
mino-piperidin-1-yl)-xanthine in a dosage of 2.5 mg, metformin
hydrochloride, L-arginine, and one or more fillers and one or more
binders, wherein the percentage of
1-[(4-methyl-quinazolin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-(3-(R)-a-
mino-piperidin-1-yl)-xanthine is about 0.2%-0.4% by weight of total
tablet core.
23. The solid pharmaceutical composition according to claim 22,
further comprising one or more glidants and/or one or more
lubricants.
24. The pharmaceutical composition according to claim 1 comprising
the active ingredients in a dosage strength of 2.5 mg of
1-[(4-methyl-quinazolin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-(3-(R)-a-
mino-piperidin-1-yl)-xanthine and 500 mg of metformin
hydrochloride.
25. The pharmaceutical composition according to claim 1 comprising
the active ingredients in a dosage strength of 2.5 mg of
1-[(4-methyl-quinazolin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-(3-(R)-a-
mino-piperidin-1-yl)-xanthine and 850 mg of metformin
hydrochloride.
26. The pharmaceutical composition according to claim 1 comprising
the active ingredients in a dosage strength of 2.5 mg of
1-[(4-methyl-quinazolin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-(3-(R)-a-
mino-piperidin-1-yl)-xanthine and 1000 mg of metformin
hydrochloride.
27. The pharmaceutical composition according to claim 1, wherein
the pharmaceutical composition further comprises the following
amount (% by weight of total coated tablet mass): 0.07-2.2% of
L-arginine.
Description
[0001] The present invention relates to pharmaceutical compositions
comprising fixed dose combinations of a DPP-4 inhibitor drug and a
partner drug, processes for the preparation thereof, and their use
to treat certain diseases.
[0002] In a more detailed aspect, the present invention relates to
oral solid dosage forms for fixed dose combination (FDC) of a
selected dipeptidyl peptidase-4 (DPP-4) inhibitor drug and a
certain partner drug. The FDC formulations are chemically stable
and either a) display similarity of in-vitro dissolution profiles
and/or are bioequivalent to the free combination, or b) allow to
adjust the in-vitro and in-vivo performance to desired levels. In a
preferred embodiment the invention relates to chemically stable FDC
formulations maintaining the original dissolution profiles of
corresponding mono tablets of each individual entity, with a
reasonable tablet size.
[0003] The enzyme DPP-4 also known as CD26 is a serine protease
known to lead to the cleavage of a dipeptide from the N-terminal
end of a number of proteins having at their N-terminal end a prolin
or alanin residue. Due to this property DPP-4 inhibitors interfere
with the plasma level of bioactive peptides including the peptide
GLP-1 and are considered to be promising drugs for the treatment of
diabetes mellitus.
[0004] For example, DPP-4 inhibitors and their uses are disclosed
in WO 2002/068420, WO 2004/018467, WO 2004/018468, WO 2004/018469,
WO 2004/041820, WO 2004/046148, WO 2005/051950, WO 2005/082906, WO
2005/063750, WO 2005/085246, WO 2006/027204, WO 2006/029769 or
WO2007/014886; or in WO 2004/050658, WO 2004/111051, WO
2005/058901, WO 2005/097798; WO 2006/068163, WO 2007/071738, WO
2008/017670; WO 2007/128721 or WO 2007/128761.
[0005] As further DPP-4 inhibitors the following compounds can be
mentioned: [0006] Sitagliptin (MK-0431) having the structural
formula A below is
(3R)-3-amino-1-[3-(trifluoromethyl)-5,6,7,8-tetrahydro-5H-[1,2,4-
]triazolo[4,3-a]pyrazin-7-yl]-4-(2,4,5-trifluorophenyl)butan-1-one,
also named
(2R)-4-oxo-4-[3-(trifluoromethyl)-5,6-dihydro[1,2,4]triazolo[4,3-a]-
pyrazin-7(8H)-yl]-1-(2,4,5-trifluorophenyl)butan-2-amine,
##STR00001##
[0007] In one embodiment, sitagliptin is in the form of its
dihydrogenphosphate salt, i.e. sitagliptin phosphate. In a further
embodiment, sitagliptin phosphate is in the form of a crystalline
anhydrate or monohydrate. A class of this embodiment refers to
sitagliptin phosphate monohydrate. Sitagliptin free base and
pharmaceutically acceptable salts thereof are disclosed in U.S.
Pat. No. 6,699,871 and in Example 7 of WO 03/004498. Crystalline
sitagliptin phosphate monohydrate is disclosed in WO 2005/003135
and in WO 2007/050485.
[0008] For details, e.g. on a process to manufacture this compound
or a salt thereof, reference is thus made to these documents.
[0009] Vildagliptin (LAF-237) having the structural formula B below
is
(2S)-{[(3-hydroxyadamantan-1-yl)amino]acetyl}pyrrolidine-2-carbonitrile,
also named
(S)-1-[(3-hydroxy-1-adamantyl)amino]acetyl-2-cyano-pyrrolidine,
##STR00002##
[0010] Vildagliptin is specifically disclosed in U.S. Pat. No.
6,166,063 and in Example 1 of WO 00/34241. Specific salts of
vildagliptin are disclosed in WO 2007/019255. A crystalline form of
vildagliptin is disclosed in WO 2006/078593. A crystalline form of
vildagliptin is disclosed in WO 2006/078593.
[0011] For details, e.g. on a process to manufacture this compound
or a salt thereof, reference is thus made to these documents.
[0012] Saxagliptin (BMS-477118) having the structural formula C
below is (1
S,3S,5S)-2-{(2S)-2-amino-2-(3-hydroxyadamantan-1-yl)acetyl}-2-azabicyclo[-
3.1.0]hexane-3-carbonitrile, also named
(S)-3-hydroxyadamantylglycine-L-cis-4,5-methanoprolinenitrile,
##STR00003##
[0013] Saxagliptin is specifically disclosed in U.S. Pat. No.
6,395,767 and in Example 60 of WO 01/68603. In one embodiment,
saxagliptin is in the form of its HCl salt or its mono-benzoate
salt as disclosed in WO 2004/052850. In a further embodiment,
saxagliptin is in the form of the free base. In a yet further
embodiment, saxagliptin is in the form of the monohydrate of the
free base as disclosed in WO 2004/052850. Crystalline forms of the
HCl salt and the free base of saxagliptin are disclosed in WO
2008/131149. A process for preparing saxagliptin is also disclosed
in WO 2005/106011 and WO 2005/115982.
[0014] For details, e.g. on a process to manufacture this compound
or a salt thereof, reference is thus made to these documents.
[0015] Denagliptin (GSK-823093) having the structural formula D
below is
(2S,4S)-1-[(2S)-2-amino-3,3-bis(4-fluorophenyl)propionyl]-4-fluoropyrroli-
dine-2-carbonitrile, also named
(2S,4S)-4-fluoro-1-[4-fluoro-beta-(4-fluorophenyl)-L-phenylalanyl]-2-pyrr-
olidinecarbonitrile
##STR00004##
[0016] Denagliptin is specifically disclosed in U.S. Pat. No.
7,132,443 and in WO 03/002531. In one embodiment, denagliptin is in
the form of its hydrochloride salt as disclosed in Example 2 of WO
03/002531 or its tosylate salt as disclosed in WO 2005/009956. A
class of this embodiment refers to denagliptin tosylate.
Crystalline anhydrous denagliptin tosylate is disclosed in WO
2005/009956.
[0017] For details, e.g. on a process to manufacture this compound
or a salt thereof, reference is thus made to these documents.
[0018] Alogliptin (SYR-322) having the structural formula E below
is
2-({6-[(3R)-3-aminopiperidin-1-yl]-3-methyl-2,4-dioxo-3,4-dihydro-2H-pyri-
midin-1-yl}methyl)benzonitrile
##STR00005##
[0019] Alogliptin is specifically disclosed in US 2005/261271, EP
1586571 and in WO 2005/095381. In one embodiment, alogliptin is in
the form of its benzoate salt, its hydrochloride salt or its
tosylate salt each as disclosed in WO 2007/035629. A class of this
embodiment refers to alogliptin benzoate. Polymorphs of alogliptin
benzoate are disclosed in WO 2007/035372. A process for preparing
alogliptin is disclosed in WO 2007/112368 and, specifically, in WO
2007/035629.
[0020] For details, e.g. on a process to manufacture this compound
or a salt thereof, reference is thus made to these documents.
[0021]
(S)-1-((2S,3S,11bS)-2-Amino-9,10-dimethoxy-1,3,4,7,11b-hexahydro-2H-pyrid-
o[2,1-a]isoquinolin-3-yl)-4-fluoromethyl-pyrrolidin-2-one or a
pharmaceutically acceptable salt thereof:
##STR00006##
[0022] This compound and methods for its preparation are disclosed
in WO 2005/000848. A process for preparing this compound
(specifically its dihydrochloride salt) is also disclosed in WO
2008/031749, WO 2008/031750 and WO2008/055814.
[0023] For details, e.g. on a process to manufacture this compound
or a salt thereof, reference is thus made to these documents.
[0024]
(R)-2-[6-(3-Amino-piperidin-1-yl)-3-methyl-2,4-dioxo-3,4-dihydro-2H-pyrim-
idin-1-ylmethyl]-4-fluoro-benzonitrile or a pharmaceutically
acceptable salt thereof:
##STR00007##
[0025] This compound and methods for its preparation and use are
disclosed in WO 2005/095381, US 2007060530, WO 2007/033350, WO
2007/035629, WO 2007/074884, WO 2007/112368 and WO 2008/033851.
Specifically claimed salts include the succinate (WO 2008/067465),
benzoate, benzenesulfonate, p-toluenesulfonate, (R)-mandelate and
hydrochloride. For details, e.g. on a process to manufacture this
compound or a salt thereof, reference is thus made to these
documents.
[0026] Partner drugs to be combined with the DPP-4 inhibitors
within the pharmaceutical compositions according to this invention
are biguanides (e.g. metformin such as metformin hydrochloride),
thiazolidinones (e.g. pioglitazone such as pioglitazone
hydrochloride), statines (e.g. atorvastatin) or ARBs (e.g.
telmisartan).
[0027] The biguanide antihyperglycemic agent metformin is disclosed
in U.S. Pat. No. 3,174,901. The preparation of metformin
(dimethyldiguanide) and its hydrochloride salt is state of the art
and was disclosed first by Emil A. Werner and James Bell, J. Chem.
Soc. 121, 1922, 1790-1794. Other pharmaceutically acceptable salts
of metformin can be found in U.S. application Ser. No. 09/262,526
filed Mar. 4, 1999 or U.S. Pat. No. 3,174,901. It is preferred that
the metformin employed herein be the metformin hydrochloride
salt.
[0028] Unless specifically noted, in the present context the terms
"DPP-4 inhibitor(s)", "biguanide(s)", "thiazolidinone(s)",
"statine(s)", "ARB(s)", or any species thereof like "metformin",
"pioglitazone", are also intended to comprise any pharmaceutically
acceptable salt thereof, crystal form, hydrate, solvate,
diastereomer or enantiomer thereof.
[0029] For avoidance of any doubt, the disclosure of each of the
foregoing documents cited above is specifically incorporated herein
by reference in its entirety.
[0030] In attempts to prepare pharmaceutical compositions of
selected DPP-4 inhibitors it has been observed, that the DPP-4
inhibitors with a primary or secondary amino group show
incompatibilities, degradation problems, or extraction problems
with a number of customary excipients such as microcrystalline
cellulose, sodium starch glycolate, croscarmellose sodium, tartaric
acid, citric acid, glucose, fructose, saccharose, lactose,
maltodextrines. Though the compounds themselves are very stable,
they react with incompatible partner drug, or its impurity product,
and/or with many excipients used in solid dosage forms and with
impurities of excipients, especially in tight contact provided in
tablets and at high excipient/drug ratios. The amino group appears
to react with reducing sugars and with other reactive carbonyl
groups and with carboxylic acid functional groups formed for
example at the surface of microcrystalline cellulose by oxidation.
These unforeseen difficulties are primarily observed in low dosage
ranges of the DPP-4 inhibitor used, which are required due to their
surprising potency, and/or high dosage ranges of the partner drug
used. Thus, pharmaceutical compositions are required to solve these
technical problems, which may be associated with the unexpected
potency of selected DPP-4 inhibitor compounds.
[0031] Other aims of the present invention will become apparent to
the skilled man from the foregoing and following remarks.
[0032] It has now been found that the pharmaceutical compositions,
which are described in greater details herein, have surprising and
particularly advantageous properties.
[0033] In particular, it has been found that by the use of a
nucleophilic and/or basic agent, which may be suitable for
stabilizing, such as e.g. a suitable buffering agent as stabilizer,
within these pharmaceutical compositions one can overcome these
problems, e.g. of incompatibility and poor stability, especially
decomposition and/or "assay decrease" which may be caused e.g. by
reaction (e.g. by acylation, urea formation or Maillard reaction,
or the like) of free base type DPP-4 inhibitors when combined with
an incompatible partner drug, or its impurity product and/or a
pharmaceutical excipient having such functional group (such as a
reducing end of a sugar or an acyl group, such as e.g. an acetyl or
carbamoyl group) to form derivatives with the free base type DPP-4
inhibitors, such as e.g. N-acetyl or N-carbamoyl derivatives.
Therefore, by the use of a suitable nucleophilic and/or basic agent
(e.g. a buffering and/or pH modifying agent) within these
pharmaceutical compositions protection against decomposition and
degradation can be achieved.
[0034] Thus, the present invention is directed to a chemically
stable FDC formulation comprising a DPP-4 inhibitor, a partner
drug, and a nucleophilic and/or basic agent.
[0035] Thus, the present invention is also directed to a chemically
stable FDC formulation comprising a DPP-4 inhibitor, a partner
drug, and a suitable buffering agent.
[0036] Thus, the present invention is also directed to a chemically
stable FDC formulation comprising a DPP-4 inhibitor, a partner
drug, and a pH modifying agent.
[0037] A DPP-4 inhibitor within the meaning of the present
invention includes, without being limited to, any of those DPP-4
inhibitors mentioned hereinabove and hereinbelow, preferably orally
active DPP-4 inhibitors.
[0038] In a closer embodiment, a DPP-4 inhibitor within the meaning
of the present invention includes a DPP-4 inhibitor with an amino
group, especially a free or primary amino group.
[0039] In a yet closer embodiment, a DPP-4 inhibitor in the context
of the present invention is a DPP-4 inhibitor with a primary amino
group, particularly with a free primary amino group.
[0040] The partner drug used is selected from the group consisting
of a biguanide (e.g. metformin such as metformin hydrochloride), a
thiazolidinone (e.g. pioglitazone such as pioglitazone
hydrochloride), a statine (e.g. atorvastatin) and an ARB (e.g.
telmisartan). A preferred partner drug within the meaning of this
invention is metformin, particularly metformin hydrochloride
(1,1-dimethylbiguanide hydrochloride or metformin HCl).
[0041] The buffering agent used may be a basic amino acid, which
has an intramolecular amino group and alkaline characteristics
(isoelectric point, pI: 7.59-10.76), such as e.g. L-arginine,
L-lysine or L-histigine. A preferred buffering agent within the
meaning of this invention is L-arginine. L-Arginine has a
particular suitable stabilizing effect on the compositions of this
invention, e.g. by suppressing degradation of the DPP-4 inhibitor
in the presence of the partner drug.
[0042] The present invention is directed to a pharmaceutical
comprising a DPP-4 inhibitor, a partner drug, a nucleophilic and/or
basic agent, and one or more pharmaceutical excipients.
[0043] The present invention is also directed to a pharmaceutical
composition comprising a DPP-4 inhibitor, a partner drug, a
suitable buffering agent, and one or more pharmaceutical
excipients.
[0044] The present invention is also directed to a pharmaceutical
comprising a DPP-4 inhibitor, a partner drug, a pH modifying agent,
and one or more pharmaceutical excipients.
[0045] In an embodiment, the present invention is directed to a
pharmaceutical composition (e.g. an oral solid dosage form,
particularly a tablet) comprising a DPP-4 inhibitor; a partner drug
(particularly metformin); and L-arginine for stabilizing the
composition and/or the DPP-4 inhibitor, particularly against
chemical degradation; as well as one or more pharmaceutical
excipients.
[0046] In another embodiment, the present invention is directed to
a pharmaceutical composition (e.g. an oral solid dosage form,
particularly a tablet) obtainable from a DPP-4 inhibitor; a partner
drug (particularly metformin); and L-arginine for stabilizing the
composition and/or the DPP-4 inhibitor, particularly against
chemical degradation; as well as one or more pharmaceutical
excipients.
[0047] In general, pharmaceutical excipients which may be used may
be selected from the group consisting of one or more fillers, one
or more binders or diluents, one or more lubricants, one or more
disintegrants, and one or more glidants, one or more film-coating
agents, one or more plasticizers, one or more pigments, and the
like.
[0048] The pharmaceutical compositions (tablets) of this invention
comprise usually a binder.
[0049] In more detail, the pharmaceutical compositions (tablets) of
this invention comprise usually one or more fillers (e.g.
D-mannitol, corn starch and/or pregelatinized starch), a binder
(e.g. copovidone), a lubricant (e.g. magnesium stearate), and a
glidant (e.g. colloidal anhydrous silica).
[0050] Suitably the pharmaceutical excipients used within this
invention are conventional materials such as D-mannitol, corn
starch, pregelatinized starch as a filler, copovidone as a binder,
magnesium stearate as a lubricant, colloidal anhydrous silica as a
glidant, hypromellose as a film-coating agent, propylene glycol as
a plasticizer, titanium dioxide, iron oxide red/yellow as a
pigment, and talc, etc.
[0051] A typical composition according to the present invention
comprises the binder copovidone (also known as copolyvidone or
Kollidon VA64).
[0052] Further, a typical composition according to the present
invention comprises the filler corn starch, the binder copovidone,
the lubricant magnesium stearate, and the glidant colloidal
anhydrous silica.
[0053] A pharmaceutical composition according to an embodiment of
the present invention is intended for the treatment of diabetes
and/or to achieve glycemic control in a type 1 or type 2 diabetes
mellitus patient and comprises a fixed dose combination formulation
as described herein together with suitable pharmaceutical
excipients. Additionally the compositions can be used to treat
rheumatoid arthritis, obesity and osteoporosis as well as to
support allograft transplantation.
[0054] Thus, in particular, the present invention is directed to a
pharmaceutical composition (especially an oral solid dosage form,
particularly a tablet) comprising a DPP-4 inhibitor, metformin
hydrochloride, L-arginine and one or more pharmaceutical
excipients, particularly one or more fillers, one or more binders,
one or more glidants, and/or one or more lubricants.
[0055] In more particular, the present invention is directed to a
pharmaceutical composition (especially an oral solid dosage form,
particularly a tablet) comprising a DPP-4 inhibitor, metformin
hydrochloride, L-arginine, copovidone as binder and one or more
further pharmaceutical excipients.
[0056] Typical pharmaceutical compositions of this invention may
comprise in the DPP-4 inhibitor portion 0.1-10% L-arginine (such as
e.g. about 0.1%, 0.25%, 0.556%, 2.12%, 2.22% or 10%) by weight of
total DPP-4 inhibitor portion, particularly about 2% (e.g. more
specifically, 2.12% by weight of total tablet core of uncoated
monolayer tablet).
[0057] Typical pharmaceutical compositions of this invention may
comprise in the DPP-4 inhibitor portion (% by weight of total DPP-4
inhibitor portion): [0058] 0.2-10% DPP-4 inhibitor, and [0059]
0.1-10% L-arginine.
[0060] Typical pharmaceutical compositions of this invention may
comprise the DPP-4 inhibitor and L-arginine in a weight ratio of
from about 1:20 to about 10:1 or from about 1:15 to about 10:1 or
from about 1:10 to about 10:1, especially from 1:10 to 5:2, such as
e.g. in a weight ratio of 1:10, 1:8.5, 1:5, 1:1, or 1:0.4, more
detailed in a weight ratio of 2.5 mg:25 mg, 2.5 mg:21.2 mg, 2.5
mg:12.5 mg, 2.5 mg:2.5 mg, or 2.5 mg:1 mg.
[0061] Typical pharmaceutical compositions of this invention may
comprise metformin hydrochloride and L-arginine in a weight ratio
of from about 40:1 to about 1000:1, such as e.g. in a weight ratio
of 40:1, 200:1, 340:1, 400:1, 500:1, 850:1, or 1000:1, more
detailed in a weight ratio of 500 mg:12.5 mg, 850 mg:21.2 mg, 1000
mg:25 mg, 500 mg:2.5 mg, 850 mg:2.5 mg, 1000 mg:2.5 mg, 500 mg:1
mg, 850 mg:1 mg, or 1000 mg:1 mg.
[0062] Typical pharmaceutical compositions of this invention may
comprise the DPP4-inhibitor, metformin hydrochloride and L-arginine
in a weight ratio of from about 1:200:0.4 to about 1:200:5 (e.g.
1:200:0.4, 1:200:1, 1:200:5), or from about 1:340:0.4 to about
1:340:8.5 (e.g. 1:340:0.4, 1:340:1, 1:340:8.5), or from about
1:400:0.4 to about 1:400:10 (e.g. 1:400:0.4, 1:400:1,
1:400:10).
[0063] Typical pharmaceutical compositions of this invention may
comprise one or more of the following amounts (% by weight of total
coated tablet mass): [0064] 0.1-0.5% DPP-4 inhibitor, [0065] 47-85%
metformin HCl, [0066] 0.07-2.2% L-arginine, [0067] 3.9-8.1% binder
(e.g. copovidone), [0068] 2.3-5.9% filler 1 (e.g. corn starch),
[0069] 0-4.4% filler 2 (e.g. pregelatinized starch), [0070] 0-33%
filler 3 (e.g. D-mannitol), [0071] 0.7-1.5% lubricant (e.g.
magnesium stearate), and [0072] 0.1-0.5% glidant (e.g. colloidal
anhydrous silica).
[0073] Further details about the FDC formulations of this
invention, e.g. the ingredients, ratio of ingredients (such as e.g.
ratio of DPP-4 inhibitor, metformin hydrochloride, L-arginine
and/or excipients), particularly with respect to special dosage
forms (tablets) used within this invention as well as their
preparation, become apparent to the skilled person from the
disclosure hereinbefore and hereinafter (including by way of
example the following examples as well as the claims).
[0074] In a first embodiment (embodiment A), a DPP-4 inhibitor in
the context of the present invention is any DPP-4 inhibitor of
formula (I)
##STR00008##
or formula (II)
##STR00009##
or formula (III)
##STR00010##
wherein R1 denotes ([1,5]naphthyridin-2-yl)methyl,
(quinazolin-2-yl)methyl, (quinoxalin-6-yl)methyl,
(4-methyl-quinazolin-2-yl)methyl, 2-cyano-benzyl,
(3-cyano-quinolin-2-yl)methyl, (3-cyano-pyridin-2-yl)methyl,
(4-methyl-pyrimidin-2-yl)methyl, or
(4,6-dimethyl-pyrimidin-2-yl)methyl and R2 denotes
3-(R)-amino-piperidin-1-yl, (2-amino-2-methyl-propyl)-methylamino
or (2-(S)-amino-propyl)-methylamino, or its pharmaceutically
acceptable salt;
[0075] In a second embodiment (embodiment B), a DPP-4 inhibitor in
the context of the present invention is a DPP-4 inhibitor selected
from the group consisting of
sitagliptin, vildagliptin, saxagliptin and alogliptin, or its
pharmaceutically acceptable salt.
[0076] Regarding the first embodiment (embodiment A), preferred
DPP-4 inhibitors are any or all of the following compounds and
their pharmaceutically acceptable salts:
1-[(4-methyl-quinazolin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-(3-(R)-am-
ino-piperidin-1-yl)-xanthine (compare WO 2004/018468, example
2(142)
##STR00011##
[0077]
1-[([1,5]naphthyridin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-((R)-
-3-amino-piperidin-1-yl)-xanthine (compare WO 2004/018468, example
2(252))
##STR00012##
[0078]
1-[(Quinazolin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-((R)-3-amin-
o-piperidin-1-yl)-xanthine (compare WO 2004/018468, example
2(80))
##STR00013##
[0079]
2-((R)-3-Amino-piperidin-1-yl)-3-(but-2-yinyl)-5-(4-methyl-quinazol-
in-2-ylmethyl)-3,5-dihydro-imidazo[4,5-d]pyridazin-4-one (compare
WO 2004/050658, example 136)
##STR00014##
[0080]
1-[(4-Methyl-quinazolin-2-yl)methyl]-3-methyl-7-(2-butyin-1-yl)-8-[-
(2-amino-2-methyl-propyl)-methylamino]-xanthine (compare WO
2006/029769, example 2(1))
##STR00015##
[0081]
1-[(3-Cyano-quinolin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-((R)--
3-amino-piperidin-1-yl)-xanthine (compare WO 2005/085246, example
1(30))
##STR00016##
[0082]
1-(2-Cyano-benzyl)-3-methyl-7-(2-butyn-1-yl)-8-((R)-3-amino-piperid-
in-1-yl)-xanthine (compare WO 2005/085246, example 1(39))
##STR00017##
[0083]
1-[(4-Methyl-quinazolin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-[(-
S)-(2-amino-propyl)-methylamino]-xanthine (compare WO 2006/029769,
example 2(4))
##STR00018##
[0084]
1-[(3-Cyano-pyridin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-((R)-3-
-amino-piperidin-1-yl)-xanthine (compare WO 2005/085246, example
1(52))
##STR00019##
[0085]
1-[(4-Methyl-pyrimidin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-((R-
)-3-amino-piperidin-1-yl)-xanthine (compare WO 2005/085246, example
1(81))
##STR00020##
[0086]
1-[(4,6-Dimethyl-pyrimidin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-
-((R)-3-amino-piperidin-1-yl)-xanthine (compare WO 2005/085246,
example 1(82))
##STR00021##
[0087]
1-[(Quinoxalin-6-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-((R)-3-amin-
o-piperidin-1-yl)-xanthine (compare WO 2005/085246, example
1(83))
##STR00022##
[0089] These DPP-4 inhibitors are distinguished from structurally
comparable DPP-4 inhibitors, as they combine exceptional potency
and a long-lasting effect with favourable pharmacological
properties, receptor selectivity and a favourable side-effect
profile or bring about unexpected therapeutic advantages or
improvements when combined with other pharmaceutical active
substances. Their preparation is disclosed in the publications
mentioned.
[0090] A more preferred DPP-4 inhibitor among the abovementioned
DPP-4 inhibitors of embodiment A of this invention is
1-[(4-methyl-quinazolin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-(3-(R)-a-
mino-piperidin-1-yl)-xanthine, particularly the free base thereof
(which is also known as BI 1356).
[0091] Regarding the second embodiment (embodiment B), preferred
DPP-4 inhibitors are selected from the group consisting of
vildagliptin, saxagliptin and alogliptin, and their
pharmaceutically acceptable salts.
[0092] Unless otherwise noted, according to this invention it is to
be understood that the definitions of the above listed DPP-4
inhibitors also comprise their pharmaceutically acceptable salts as
well as hydrates, solvates and polymorphic forms thereof. With
respect to salts, hydrates and polymorphic forms thereof,
particular reference is made to those which are referred to
hereinabove and hereinbelow.
[0093] With respect to embodiment A, the methods of synthesis for
the DPP-4 inhibitors according to embodiment A of this invention
are known to the skilled person. Advantageously, the DPP-4
inhibitors according to embodiment A of this invention can be
prepared using synthetic methods as described in the literature.
Thus, for example, purine derivatives of formula (I) can be
obtained as described in WO 2002/068420, WO 2004/018468, WO
2005/085246, WO 2006/029769 or WO 2006/048427, the disclosures of
which are incorporated herein. Purine derivatives of formula (II)
can be obtained as described, for example, in WO 2004/050658 or WO
2005/110999, the disclosures of which are incorporated herein.
Purine derivatives of formula (III) can be obtained as described,
for example, in WO 2006/068163, WO 2007/071738 or WO 2008/017670,
the disclosures of which are incorporated herein. The preparation
of those DPP-4 inhibitors, which are specifically mentioned
hereinabove, is disclosed in the publications mentioned in
connection therewith. Polymorphous crystal modifications and
formulations of particular DPP-4 inhibitors are disclosed in WO
2007/128721 and WO 2007/128724, respectively, the disclosures of
which are incorporated herein in their entireties.
[0094] With respect to embodiment B, the methods of synthesis for
the DPP-4 inhibitors of embodiment B are described in the
scientific literature and/or in published patent documents,
particularly in those cited herein.
[0095] With respect to the first embodiment (embodiment A), the
dosage typically required of the DPP-4 inhibitors mentioned herein
in embodiment A when administered orally is 0.5 mg to 100 mg,
preferably 2.5 mg to 50 mg or 0.5 mg to 10 mg, more preferably 2.5
mg to 10 mg or 1 mg to 5 mg, in each case 1 to 4 times a day. Thus,
the dosage required of
1-[(4-methyl-quinazolin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-(3-(R)-a-
mino-piperidin-1-yl)-xanthine when administered orally is 0.5 mg to
10 mg per patient per day, preferably 2.5 mg to 10 mg or 1 mg to 5
mg per patient per day.
[0096] A dosage form prepared with a pharmaceutical composition
comprising a DPP-4 inhibitor mentioned herein in embodiment A
contain the active ingredient in a dosage range of 0.1-100 mg, in
particular 0.5 to 10 mg. Thus, particular dosage strengths of
1-[(4-methyl-quinazolin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-(3-(R)-a-
mino-piperidin-1-yl)-xanthine are 0.5 mg, 1 mg, 2.5 mg, 5 mg and 10
mg. A more particular unit dosage strength of
1-[(4-methyl-quinazolin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-(3-(R)-a-
mino-piperidin-1-yl)-xanthine for inclusion into fixed dose
combination pharmaceutical compositions of the present invention is
2.5 mg.
[0097] With respect to the second embodiment (embodiment B), the
doses of DPP-4 inhibitors mentioned herein in embodiment B to be
administered to mammals, for example human beings, of, for example,
approximately 70 kg body weight, may be generally from about 0.5 mg
to about 350 mg, for example from about 10 mg to about 250 mg,
preferably 20-200 mg, more preferably 20-100 mg, of the active
moiety per person per day, or from about 0.5 mg to about 20 mg,
preferably 2.5-10 mg, per person per day, divided preferably into 1
to 4 single doses which may, for example, be of the same size.
Single dosage strengths comprise, for example, 2.5, 5, 10, 25, 40,
50, 75, 100, 150 and 200 mg of the DPP-4 inhibitor active
moiety.
[0098] A dosage strength of the DPP-4 inhibitor sitagliptin is
usually between 25 and 200 mg of the active moiety. A recommended
dose of sitagliptin is 100 mg calculated for the active moiety
(free base anhydrate) once daily. Unit dosage strengths of
sitagliptin free base anhydrate (active moiety) are 25, 50, 75,
100, 150 and 200 mg. Particular unit dosage strengths of
sitagliptin (e.g. per tablet) are 25, 50 and 100 mg. An equivalent
amount of sitagliptin phosphate monohydrate to the sitagliptin free
base anhydrate is used in the pharmaceutical compositions, namely,
32.13, 64.25, 96.38, 128.5, 192.75, and 257 mg, respectively.
Adjusted dosages of 25 and 50 mg sitagliptin are used for patients
with renal failure.
[0099] A dosage range of the DPP-4 inhibitor vildagliptin is
usually between 10 and 150 mg daily, in particular between 25 and
150 mg, 25 and 100 mg or 25 and 50 mg or 50 and 100 mg daily.
Particular examples of daily oral dosage are 25, 30, 35, 45, 50,
55, 60, 80, 100 or 150 mg. In a more particular aspect, the daily
administration of vildagliptin is between 25 and 150 mg or between
50 and 100 mg. In another more particular aspect, the daily
administration of vildagliptin is 50 or 100 mg. The application of
the active ingredient may occur up to three times a day, preferably
one or two times a day. Particular dosage strengths are 50 mg or
100 mg vildagliptin.
[0100] Metformin is usually given in doses varying from about 250
mg to 3000 mg, particularly from 500 mg to 2000 mg up to 2500 mg
per day using various dosage regimens.
[0101] A dosage range of the partner drug metformin is usually from
100 mg to 500 mg or 200 mg to 850 mg (1-3 times a day), or from 300
mg to 1000 mg once or twice a day.
[0102] The unit dosage strengths of the metformin hydrochloride for
use in the present invention may be from 100 mg to 2000 mg or from
250 mg to 2000 mg, preferably from 250 mg to 1000 mg. Particular
dosage strengths may be 250, 500, 625, 750, 850 and 1000 mg of
metformin hydrochloride. These unit dosage strengths of metformin
hydrochloride represent the dosage strengths approved in the US for
marketing to treat type 2 diabetes. More particular unit dosage
strengths of metformin hydrochloride for incorporation into the
fixed dose combination pharmaceutical compositions of the present
invention are 500, 850 and 1000 mg of metformin hydrochloride.
[0103] A dosage of the partner drug pioglitazone is usually 1-10
mg, 15 mg, 30 mg, or 45 mg once a day.
[0104] A dosage of the partner drug telmisartan is usually from 20
mg to 320 mg or 40 mg to 160 mg per day.
[0105] A dosage of the partner drug atorvastatin is usually from 1
mg to 40 mg or 10 mg to 80 mg once a day
[0106] The amount of the DPP-4 inhibitor and of the partner drug in
the pharmaceutical composition according to this invention
correspond to the respective dosage ranges as provided
hereinbefore. For example, a pharmaceutical composition comprises
1-[(4-methyl-quinazolin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-(3-(R)-a-
mino-piperidin-1-yl)-xanthine in an amount of 0.5 mg to 10 mg
(namely 0.5 mg, 1 mg, 2.5 mg, 5 mg or 10 mg) and of metformin
hydrochloride in an amount of 250 mg to 1000 mg (namely 250, 500,
625, 750, 850 or 1000 mg).
[0107] Specific embodiments of dosage strengths for
1-[(4-methyl-quinazolin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-(3-(R)-a-
mino-piperidin-1-yl)-xanthine and metformin hydrochloride in the
fixed dose combinations of the present invention are the following:
[0108] (1) 2.5 mg of
1-[(4-methyl-quinazolin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)--
8-(3-(R)-amino-piperidin-1-yl)-xanthine free base, and 500 mg
metformin hydrochloride; [0109] (2) 2.5 mg of
1-[(4-methyl-quinazolin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-(3-(R)-a-
mino-piperidin-1-yl)-xanthine free base, and 850 mg metformin
hydrochloride; [0110] (3) 2.5 mg of
1-[(4-methyl-quinazolin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-(3-(R)-a-
mino-piperidin-1-yl)-xanthine free base, and 1000 mg metformin
hydrochloride.
[0111] The particular fixed dose combinations of BI 1356 and
metformin of the present invention may be administered once or
twice daily to the patient, in particular twice daily.
[0112] In a preferred aspect of the present invention, the present
invention is directed to a pharmaceutical composition (especially
an oral solid dosage form, particularly a tablet) comprising or
obtainable from [0113] a DPP-4 inhibitor selected from the group
consisting of [0114]
1-[(4-methyl-quinazolin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-(3-(R)-a-
mino-piperidin-1-yl)-xanthine free base, vildagliptin, saxagliptin
and alogliptin, [0115] metformin hydrochloride, [0116] L-arginine,
[0117] and one or more pharmaceutical excipients, such as e.g.
those described herein.
[0118] A particularly preferred DPP-4 inhibitor to be emphasized
within the meaning of this invention is
1-[(4-methyl-quinazolin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-(3-(R)-a-
mino-piperidin-1-yl)-xanthine free base (also known as BI
1356).
[0119] In particular, it has been found that L-arginine is
effective as stabilizing agent for FDC combinations of
1-[(4-methyl-quinazolin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-(3-(R)-a-
mino-piperidin-1-yl)-xanthine free base with metformin HCl. Even
after 6 months storage at accelerated conditions L-arginine is able
to suppress degradation of
1-[(4-methyl-quinazolin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-(3-(R)-a-
mino-piperidin-1-yl)-xanthine free base effectively. The effect
seems to be concentration dependent. Thus, L-arginine may act as
stabilizing and buffering agent in the formulation.
[0120] In a more preferred aspect of the present invention, the
present invention is directed to a pharmaceutical composition
(especially an oral solid dosage form, particularly a tablet)
comprising or made from [0121]
1-[(4-methyl-quinazolin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-(3-(R)-a-
mino-piperidin-1-yl)-xanthine free base (BI 1356), [0122] metformin
hydrochloride, [0123] L-arginine, [0124] and one or more
pharmaceutical excipients, such as e.g. those described herein.
[0125] Typical pharmaceutical compositions according to this
invention comprise or are made by comprising combining any one of
the following amounts (1), (2) or (3) of active ingredients and
L-arginine: [0126] (1) 2.5 mg of
1-[(4-methyl-quinazolin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)--
8-(3-(R)-amino-piperidin-1-yl)-xanthine free base, 500 mg metformin
hydrochloride, and from 1.0 mg to 12.5 mg L-arginine (specifically
1.0 mg, 2.5 mg or 12.5 mg L-arginine); [0127] (2) 2.5 mg of
1-[(4-methyl-quinazolin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-(3-(R)-a-
mino-piperidin-1-yl)-xanthine free base, 850 mg metformin
hydrochloride, and from 1.0 mg to 21.2 mg L-arginine (specifically
1.0 mg, 2.5 mg or 21.2 mg L-arginine); [0128] (3) 2.5 mg of
1-[(4-methyl-quinazolin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-(3-(R)-a-
mino-piperidin-1-yl)-xanthine free base, 1000 mg metformin
hydrochloride, and from 1.0 mg to 25.0 mg L-arginine (specifically
1.0 mg, 2.5 mg or 25 mg L-arginine).
[0129] In a further aspect of the present invention, the present
invention provides methods of manufacturing of the compositions,
formulations, blends or dosage forms of this invention, such as
e.g. by using methods known to one skilled in the art and/or in a
manner as described herein, for example they may be obtained by
processes comprising using (e.g. mixing, combining, blending and/or
composing) the components and/or ingredients, or pre-mixtures
thereof, mentioned hereinbefore and hereinafter, as well as the
present invention further provides compositions, formulations,
blends or dosage forms obtainable by these methods or processes
and/or obtainable from the components, ingredients, pre-mixtures
and/or mixtures mentioned hereinbefore and hereinafter.
[0130] In a further aspect of the present invention, the present
invention provides a pharmaceutical composition, formulation, blend
or dosage form of this invention which is substantially free of or
only marginally comprises impurities and/or degradation products;
that means, for example, that the composition, formulation, blend
or dosage from includes about <5%, or about <4%, or about
<3%, or less than about 2%, preferably less than about 1%, more
preferably less than about 0.5%, even more preferably less than
about 0.2% of any individual or total impurity or degradation
product(s) by total weight, such as e.g. N-acetyl and/or
N-carbamoyl derivative of the free base type DPP-4 inhibitor. The
content and/or degradation can be determined by well-known
analytical methods, for example using HPLC methods.
[0131] In this context, in a further aspect of the present
invention, the present invention provides derivatives of a DPP-4
inhibitor having an amino group, particularly a free primary amino
group, as mentioned herein, said derivatives being obtainable by
acetylation of the amino group (e.g. to yield the group
--NHC(O)CH.sub.3) or by carbamoylation of the amino group (e.g. to
yield the group --NHC(O)NH.sub.2).
[0132] Dosage forms for the FDC formulations of this invention:
[0133] Another purpose of this invention is to develop the FDC
formulations of this invention with a reasonable tablet size, with
good tablet properties (e.g. stability, hardness, friability,
disintegration, content uniformity and the like) and, in a
preferred embodiment, without disturbing the original dissolution
profiles of each mono tablet in case of desired proof of
bioequivalence with minimized risk of failure.
[0134] Designing of the dosage form is an important matter not only
to optimize the tablet size and dissolution profiles but also to
minimize the amount of stabilizing agent, because the pH change by
dissolving of buffering agent may affect the dissolution profiles
of the DPP-4 inhibitor or a partner drug. The selection of the
dosage form is depending on the dose strengths of the active
ingredients used and their physicochemical and solid state
characteristics.
[0135] A conventional approach (i.e. physical separation) may not
be useful for stabilization of certain DPP-4 inhibitors of this
invention. A buffering agent like L-arginine need to be added into
the formulation for suppressing degradation, however it may be
necessary to minimize the amount of L-arginine because its alkaline
characteristics give a negative impact on the dissolution profiles
or the stability of the DPP-4 inhibitor or a partner drug.
[0136] Thus, it has been found that suitable dosage forms for the
FDC formulations of this invention are film-coated tablets
(film-coating for drug loading, such as particularly DPP-4
inhibitor drug loading by film coating on tablet cores containing
the partner drug), mono-layer tablets, bi-layer tablets, tri-layer
tablets and press-coated tablets (e.g. tablet-in-tablet or bull's
eye tablet with DPP-4 inhibitor core), which dosage forms are good
measures to achieve the goal under consideration of desired
pharmaceutical profiles and characteristics of a DPP-4 inhibitor
and a partner drug used.
[0137] Said dosage forms have been found to be applicable to the
FDC formulations either keeping the original dissolution profiles
of each mono tablet or adjusting the profiles to desired levels,
e.g. including extended release characteristics, and a reasonable
tablet size.
[0138] A typical mono-layer tablet of this invention comprises a
DPP-4 inhibitor, metformin hydrochloride, L-arginine, one or more
fillers (such as e.g. corn starch), one or more binders (such as
e.g. copovidone), one or more glidants (such as e.g. colloidal
anhydrous silica) and one or more lubricants (such as e.g.
magnesium stearate).
[0139] In a preferred embodiment of the present invention, the
present invention is directed to an oral solid pharmaceutical
composition, preferably a tablet, particularly a mono-layer tablet
comprising or made from [0140]
1-[(4-methyl-quinazolin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-(3-(R)-a-
mino-piperidin-1-yl)-xanthine (also known as BI 1356, e.g. in an
amount of 2.5 mg), [0141] metformin (particularly metformin
hydrochloride, e.g. in an amount of 500 mg, 850 mg or 1000 mg),
[0142] L-arginine, [0143] and one or more pharmaceutical
excipients, particularly one or more fillers (e.g. corn starch),
one or more binders (e.g. copovidone), one or more glidants (e.g.
colloidal anhydrous silica) and/or one or more lubricants (e.g.
magnesium stearate), [0144] as well as, optionally, a film coat
e.g. comprising one or more film-coating agents (e.g.
hypromellose), one or more plasticizers (e.g. propylene glycol),
one or more pigments (e.g. titanium dioxide, iron oxide red and/or
iron oxide yellow) and/or one or more glidants (e.g. talc).
[0145] A method of manufacturing a tablet of this invention
comprises tabletting (e.g. compression) of one or more final blends
in form of granules. Granules of the (final) blend(s) according to
this invention may be prepared by methods well-known to one skilled
in the art (e.g. high shear wet granulation or fluid bed
granulation). Granules according to this invention as well as
details of granulation processes (including their separate steps)
for the preparation of granules of this invention are described by
way of example in the following examples.
[0146] An illustrative granulation process for the preparation of
granules comprising the mono-layer composition comprises [0147] i.)
combining (e.g. dissolving or dispersing) L-arginine, a binder
(e.g. copovidone) and, optionally, the DPP-4 inhibitor (e.g. BI
1356) in a solvent or mixture of solvents such as purified water at
ambient temperature to produce a granulation liquid; [0148] ii.)
blending metformin HCl, a filler (e.g. corn starch) and,
optionally, the DPP-4 inhibitor (e.g. BI 1356) in a suitable mixer
(e.g. fluid-bed granulator) to produce a pre-mix; [0149] wherein
the DPP-4 inhibitor (e.g. BI 1356) may be included either in the
granulation liquid obtained in i.) or in the pre-mix obtained in
ii.), preferably BI 1356 is dispersed in the granulation liquid and
is absent in the pre-mix; [0150] iii.) spraying the
granulation-liquid into the pre-mix and granulating the mixture for
example in a fluid-bed granulator, preferably under dry condition;
[0151] iv.) drying the granulate, e.g. at about 70.degree. C. inlet
air temperature until the desired loss on drying value in the range
of 1-2% is obtained; [0152] v.) delumping the dried granulate for
example by sieving through a sieve with a mesh size of 0.5 to 1.0
mm; [0153] vi.) blending the sieved granulate and preferably sieved
glidant (e.g. colloidal anhydrous silica) in a suitable blender;
[0154] vii.) adding preferably sieved lubricant (e.g. magnesium
stearate) to the granulate for final blending for example in the
free-fall blender.
[0155] Preferentially, a mono-layer tablet according to this
invention comprises or is obtainable from a mixture comprising any
one of the following amounts (1), (2) or (3) of active ingredients
and L-arginine: [0156] (1) 2.5 mg of
1-[(4-methyl-quinazolin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-(3-(R)-a-
mino-piperidin-1-yl)-xanthine free base, 500 mg metformin
hydrochloride, and 12.5 mg L-arginine; [0157] (2) 2.5 mg of
1-[(4-methyl-quinazolin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-(3-(R)-a-
mino-piperidin-1-yl)-xanthine free base, 850 mg metformin
hydrochloride, and 21.2 mg L-arginine; [0158] (3) 2.5 mg of
1-[(4-methyl-quinazolin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-(3-(R)-a-
mino-piperidin-1-yl)-xanthine free base, 1000 mg metformin
hydrochloride, and 25 mg L-arginine.
[0159] A typical bi-layer tablet of this invention comprises
a DPP-4 inhibitor portion comprising a DPP-4 inhibitor, L-arginine,
one or more fillers (such as e.g. D-mannitol, pregelatinized starch
and corn starch), one or more binders (such as e.g. copovidone) and
one or more lubricants (such as e.g. magnesium stearate), and a
metformin HCl portion comprising metformin hydrochloride, one or
more fillers (such as e.g. corn starch), one or more binders (such
as e.g. copovidone), one or more glidants (such as e.g. colloidal
anhydrous silica) and one or more lubricants (such as e.g.
magnesium stearate).
[0160] Preferentially, a bi-layer tablet according to this
invention comprises or is obtainable from a mixture comprising any
one of the following amounts (1), (2) or (3) of active ingredients
and L-arginine: [0161] (1) 2.5 mg of
1-[(4-methyl-quinazolin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-(3-(R)-a-
mino-piperidin-1-yl)-xanthine free base, 500 mg metformin
hydrochloride, and 2.5 mg L-arginine; [0162] (2) 2.5 mg of
1-[(4-methyl-quinazolin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-(3-(R)-a-
mino-piperidin-1-yl)-xanthine free base, 850 mg metformin
hydrochloride, and 2.5 mg L-arginine; [0163] (3) 2.5 mg of
1-[(4-methyl-quinazolin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-(3-(R)-a-
mino-piperidin-1-yl)-xanthine free base, 1000 mg metformin
hydrochloride, and 2.5 mg L-arginine.
[0164] A typical press-coated tablet (tablet-in-tablet or bull's
eye tablet) of this invention comprises a DPP-4 inhibitor core
portion comprising a DPP-4 inhibitor, L-arginine, one or more
fillers (such as e.g. D-mannitol, pregelatinized starch and corn
starch), one or more binders (such as e.g. copovidone) and one or
more lubricants (such as e.g. magnesium stearate),
and a metformin HCl portion comprising metformin hydrochloride, one
or more fillers (such as e.g. corn starch), one or more binders
(such as e.g. copovidone), one or more glidants (such as e.g.
colloidal anhydrous silica) and one or more lubricants (such as
e.g. magnesium stearate).
[0165] Preferentially, a press-coated tablet (tablet-in-tablet or
bull's eye tablet) according to this invention comprises or is
obtainable from a mixture comprising any one of the following
amounts (1), (2) or (3) of active ingredients and L-arginine:
[0166] (1) 2.5 mg of
1-[(4-methyl-quinazolin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-(3-(R)-a-
mino-piperidin-1-yl)-xanthine free base, 500 mg metformin
hydrochloride, and 1.0 mg L-arginine; [0167] (2) 2.5 mg of
1-[(4-methyl-quinazolin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-(3-(R)-a-
mino-piperidin-1-yl)-xanthine free base, 850 mg metformin
hydrochloride, and 1.0 mg L-arginine; [0168] (3) 2.5 mg of
1-[(4-methyl-quinazolin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-(3-(R)-a-
mino-piperidin-1-yl)-xanthine free base, 1000 mg metformin
hydrochloride, and 1.0 mg L-arginine.
[0169] A typical film-coated tablet (DPP-4 inhibitor coating on
metformin HCl tablet, i.e. drug layering by film-coating for drug
loading) of this invention comprises
a metformin HCl core portion comprising metformin hydrochloride,
one or more fillers (such as e.g. corn starch), one or more binders
(such as e.g. copovidone), one or more glidants (such as e.g.
colloidal anhydrous silica) and one or more lubricants (such as
e.g. magnesium stearate), wherein said core portion is seal-coated
with a film coat comprising one or more film-coating agents (such
as e.g. hypromellose), one or more plasticizers (such as e.g.
propylene glycol), one or more pigments (such as e.g. titanium
dioxide, iron oxide red and/or iron oxide yellow) and one or more
glidants (such as e.g. talc); and a DPP-4 inhibitor layer
comprising a DPP-4 inhibitor, L-arginine, one or more film-coating
agents (such as e.g. hypromellose) and one or more plasticizers
(such as e.g. propylene glycol).
[0170] Preferentially, a film-coated tablet (DPP4-inhibitor drug
loading) according to this invention comprises or is obtainable
from a mixture comprising any one of the following amounts (1), (2)
or (3) of active ingredients and L-arginine: [0171] (1) 2.5 mg of
1-[(4-methyl-quinazolin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-(3-(R)-a-
mino-piperidin-1-yl)-xanthine free base, 500 mg metformin
hydrochloride, and 2.5 mg L-arginine; [0172] (2) 2.5 mg of
1-[(4-methyl-quinazolin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-(3-(R)-a-
mino-piperidin-1-yl)-xanthine free base, 850 mg metformin
hydrochloride, and 2.5 mg L-arginine; [0173] (3) 2.5 mg of
1-[(4-methyl-quinazolin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-(3-(R)-a-
mino-piperidin-1-yl)-xanthine free base, 1000 mg metformin
hydrochloride, and 2.5 mg L-arginine.
[0174] Preferably, these abovementioned tablets (mono-, bi-layer,
press-coated and drug-coated tablets) are further over-coated with
a final film coat, which comprises a film-coating agent (such as
e.g. hypromellose), a plasticizer (such as e.g. propylene glycol),
pigments (such as e.g. titanium dioxide, iron oxide red and/or iron
oxide yellow) and a glidant (such as e.g. talc). Typically this
additional film over-coat may represent 1-4%, preferentially 1-2%,
of the total mass of the composition.
[0175] The following dosage forms of the invention can be applied
to the FDC formulation of
1-[(4-methyl-quinazolin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-(3-(R)-a-
mino-piperidin-1-yl)-xanthine free base (BI 1356) and metformin
hydrochloride based on the characteristics of drug substances and
requirements of the desired pharmaceutical profiles:
a) Mono-Layer Tablets
[0176] Mono-layer tablets with L-arginine show satisfactory
stability results, good dissolution properties and good content
uniformity (CU). Mono-layer tablets can be manufactured using
conventional technologies (including fluid-bed granulation for the
DPP-4 inhibitor and metformin hydrochloride, e.g. comprising adding
the DPP-4 inhibitor as powder or as an aqueous suspension in the
granulation liquid to the fluid bed granulator).
b) Bi-Layer Tablets
[0177] Bi-layer tablets with L-arginine show promising stability
results, good dissolution properties and good CU. Bi-layer tablets
can be manufactured using conventional bi-layer tableting
technologies (e.g. rotary bi-layer tableting machine).
c) Press-Coated Tablets
[0178] Press-coated tablets (tablet-in-tablets and advanced
press-coated bull's eye tablets) show promising stability, good CU
and dissolution. Press-coated tablets can be manufactured using
conventional press-coating technology, such as e.g. on a Kilian
tablet press to obtain tablet-in-tablet or on other conventional
press-coater to obtain bull's eye tablet. As an advantage of this
approach, it is easy to minimize the amount of L-arginine in the
formulation and control the assay and CU of the DPP-4 inhibitor
portion (very small amount of drug loading; 2.5 mg/tablet where the
dose strengths of metformin HCl are 500, 850 and 1000 mg/tablet).
Another advantage is that DPP-4 inhibitor- and metformin
HCl-portion can be designed flexibly to minimize the tablet size. A
modified press-coated tablet named "bull's eye tablet" may be a
universal dosage potentially for bi-layer tablets as well as other
FDC. Bull's eye tablet can be manufactured in a one-step
press-coating without separate core formation (like in bi-layer
tableting) being necessary.
[0179] It is to be noted that within the meaning of this invention
the skilled person is aware about what is meant with the phrase
"bull's eye tablet" used herein. As it known to the skilled person,
this tablet (also referred to as an inlay tablet or a dot) is
composed of an outer coat and an inner core, and in which, instead
of the inner core zone being completely surrounded by the outer
coat, one surface of the zone corresponding to the inner core zone
is exposed.
d) Film-Coated Tablets (Drug Layering by Film-Coating for Drug
Loading)
[0180] Coating of DPP-4 inhibitor drug substance on the metformin
HCl tablets shows acceptable dissolution results and promising
stability data. L-arginine needs to be added into film-coating for
stabilization. As an advantage for this approach, it is possible to
integrate DPP-4 inhibitor portion into a partner drug portion as it
is, even if the dosage form is a modified/controlled release
formulation. Within the film-coating process coating endpoint
determination is necessary via analytics.
[0181] The method of layering of the DPP-4 inhibitor by
film-coating as described herein (including the steps of
seal-coating, drug-loading and, optional, over-coating) may be
applied to any kind of cores or tablets which may comprise an
active ingredient (e.g. a partner drug as mentioned herein), for
example metformin cores or tablets, such as e.g. immediate release
metformin tablets, sustained release metformin tablets, extended
release metformin tablets, modified release metformin tablets,
controlled release metformin tablets or delayed release metformin
tablets. Thus, the present invention further relates to a tablet
which comprises a film-coat layer comprising the DPP-4 inhibitor, a
film-forming agent (e.g. hypromellose), a plasticizer (e.g.
propylene glycol) and L-arginine, or which is obtainable by
comprising using such a method of layering of the DPP-4 inhibitor
by film-coating as described herein. The present invention also
relates to a FDC tablet comprising an immediate or extended release
metformin tablet core, a seal coat, a film-coat layer comprising
the DPP-4 inhibitor, and, optionally, an over-coat; e.g. each as
described herein, as well as to such a FDC tablet made by a process
comprising the following steps of seal-coating on a metformin
tablet core, layering of a DPP-4 inhibitor by film-coating and,
optional, over-coating, e.g. each step such as described
herein.
[0182] Pharmaceutical immediate release dosage forms of this
invention preferably have dissolution properties such that after 45
minutes for each of the active ingredients at least 75%, even more
preferably at least 90% by weight of the respective active
ingredient is dissolved. In a particular embodiment, after 30
minutes for each of the active ingredients especially of the
mono-layer tablet according to this invention (including tablet
core and film-coated tablet) at least 70-75% (preferably at least
80%) by weight of the respective active ingredient is dissolved. In
a further embodiment, after 15 minutes for each of the active
ingredients especially of the mono-layer tablet according to this
invention (including tablet core and film-coated tablet) at least
55-60% by weight of the respective active ingredient is dissolved.
The dissolution properties can be determined in standard
dissolution tests, e.g. according to standard pharmacopeias (e.g.
using paddle method with agitation speed of 50 rpm, 0.1 M
hydrochloric acid as dissolution medium at a temperature of
37.degree. C., and HPLC (BI 1356) and UV (metformin) analysis of
the samples).
[0183] In the pharmaceutical compositions and pharmaceutical dosage
forms according to the invention BI 1356, for example a crystalline
form thereof, preferably has a particle size distribution
(preferably by volume) such that at least 90% of the respective
active pharmaceutical ingredient has a particle size smaller than
200 .mu.m, i.e. X90<200 .mu.m, more preferably X90.ltoreq.150
.mu.m. More preferably the particle size distribution is such that
X90.ltoreq.100 .mu.m, even more preferably X90.ltoreq.75 .mu.m. In
addition the particle size distribution is preferably such that
X90>0.1 .mu.m, more preferably X90.gtoreq.1 .mu.m, most
preferably X90.gtoreq.5 .mu.m. Therefore preferred particle size
distributions are such that 0.1 .mu.m<X90<200 .mu.m,
particularly 0.1 .mu.m<X90.ltoreq.150 .mu.m, more preferably 1
.mu.m.ltoreq.X90.ltoreq.150 .mu.m, even more preferably 5
.mu.m.ltoreq.X90.ltoreq.100 .mu.m. A preferred example of a
particle size distribution of BI 1356 is such that X90.ltoreq.50
.mu.m or 10 .mu.m.ltoreq.X90.ltoreq.50 .mu.m. It can be found that
a pharmaceutical composition comprising BI 1356 with a particle
size distribution as indicated hereinbefore shows desired
properties (e.g. with regard to dissolution, content uniformity,
production, or the like). The indicated particle size properties
are determined by laser-diffraction method, in particular low angle
laser light scattering, i.e. Fraunhofer diffraction. Alternatively,
the particle size properties can be also determined by microscopy
(e.g. electron microscopy or scanning electron microscopy). The
results of the particle size distribution determined by different
techniques can be correlated with one another.
[0184] Optimized formulation of metformin HCl portion:
[0185] Another purpose of this invention is to provide improved
formulations of the metformin HCl portion of the pharmaceutical
compositions according to this invention.
[0186] For the metformin HCl part a high drug load is advantageous
to be achieved as a pre-requisite for a reasonable small tablet
size.
[0187] Thus, it has been found that drug load of metformin HCl and
compactability (compression force-crushing strength profile) of the
tablets of this invention can be improved by surface treatment of
metformin HCl with a water-soluble polymer, particularly
copolyvidone.
[0188] Several water-soluble polymers including polyvinyl alcohol
(PVA), hypromellose (HPMC), hydroxypropyl cellulose (HPC), methyl
cellulose (MC), Povidone (PVP) and copolyvidone may be tested to
improve compactability (compression force-crushing strength
profile). As the results, PVA shows the best effect in terms of
compactability but the manufacturability can be poor due to
sticking problem during fluid-bed granulation. Further on, PVA may
be not finally selected because of its negative impact on the
stability of certain DPP-4 inhibitors of this invention.
[0189] Formulation optimization studies have identified a
composition with over 84% drug load of metformin HCl and improved
crushing strength by surface-treatment of metformin HCl with the
water-soluble polymer copolyvidone.
[0190] Therefore, finally, copolyvidone is selected and the amount
can be optimized, advantageously resulting in stable formulations
and the viscosity of the granulating solution is enough low to
prepare the aqueous solution and operate spraying by a fluid-bed
granulator.
[0191] In optional addition, it has been found that heating/drying
of metformin HCl drug substance is effective to improve the
stability of certain DPP-4 inhibitors of this invention in
combination with metformin HCl. The pre-treatment for metformin HCl
needs to be conducted before starting of granulation with the DPP-4
inhibitor. The heating/drying at 80.degree. C. with a fluid-bed
granulator may be helpful to reduce an excessive amount of volatile
impurities (which might be urea) in the metformin HCl.
[0192] The present invention is not to be limited in scope by the
specific embodiments described herein. Various modifications of the
invention in addition to those described herein may become apparent
to those skilled in the art from the present disclosure. Such
modifications are intended to fall within the scope of the appended
claims.
[0193] All patent applications cited herein are hereby incorporated
by reference in their entireties.
[0194] Further embodiments, features and advantages of the present
invention may become apparent from the following examples. The
following examples serve to illustrate, by way of example, the
principles of the invention without restricting it.
EXAMPLES
1. Mono-Layer Tablet
[0195] The composition of mono-layer tablets for a DPP-4 inhibitor
of this invention (BI 1356)+metformin HCl FDC (Film-coated Tablets)
is shown in Table 1.
TABLE-US-00001 TABLE 1 Composition of BI 1356 + Metformin HCl FDC
Mono-layer Tablets Dose Strength (BI 1356/metformin HCl), mg
2.5/500 2.5/850 2.5/1000 Ingredient [mg] [%] [mg] [%] [mg] [%] BI
1356 2.50 0.42 2.50 0.25 2.50 0.21 Metformin Hydrochloride 500.0
84.75 850.00 85.00 1000.00 84.75 L-Arginine 12.50 2.12 21.20 2.12
25.00 2.12 Corn starch 20.00 3.39 33.10 3.31 42.50 3.60 Copovidone
47.50 8.05 80.50 8.05 95.00 8.05 Colloidal Anhydrous Silica 2.50
0.42 4.20 0.42 5.00 0.42 Magnesium stearate 5.00 0.85 8.50 0.85
10.00 0.85 Purified water* 186** 315** 372** Total Mass (tablet
core) 590.00 100.00 1000.00 100.00 1180.00 100.00 Hypromellose (5
mPa * s) 6.00 50.00 8.00 50.00 9.00 50.00 Propylene glycol 0.60
5.00 0.80 5.00 0.90 5.00 Talc 2.88 18.50 2.96 18.50 4.455 18.50
Titanium dioxide 2.40 25.00 4.00 25.00 3.60 25.00 Iron oxide,
yellow 0.12 1.25 0.20 1.25 Iron oxide, red 0.04 0.25 0.045 1.25
Purified water** 88** 117** 132** Total Mass (film-coat) 12.00
100.00 16.00 100.00 18.00 100.00 Total Mass (coated tablet) 602.00
1016.00 1198.00 **Removed during processing, does not appear in
final product
Manufacturing Procedure (Mono-Layer Tablets):
[0196] DPP-4 inhibitor of this invention (e.g. BI 1356)+metformin
HCl FDC mono-layer tablets are produced by a fluid-bed granulation
process and a conventional tableting process with a rotary press.
Optionally, metformin HCl and corn starch may be pre-treated by
heating in a chamber of fluid-bed granulator to remove excessive
HCl and/or impurity products before mixing with the active DPP-4
inhibitor ingredient. After the optional pre-treatment of metformin
HCl and corn starch, the DPP-4 inhibitor is either added as powder
and premixed before fluid-bed granulation is conducted by spraying
of "Granulation Liquid" composed of copolyvidon (Kollidon VA64),
L-arginine and purified water, or directly dispersed in the
"granulation liquid". After finishing of fluid-bed granulation, the
granulate is sieved with a suitable screen. The sieved granulate is
blended with colloidal anhydrous silica (Aerosil 200) and magnesium
stearate as a lubricant. The final mixture is compressed into
tablets using a conventional rotary tablet press.
[0197] The tablet cores may be film-coated by an aqueous
film-coating suspension, containing hypromellose as film-forming
agent, propylene glycol as plasticizer, talc as glidant and the
pigments yellow iron oxide and/or red iron oxide and titanium
dioxide.
[0198] Narrative more specific description of the preferred
manufacturing process for the mono-layer tablets: [0199] a)
Metformin HCl and corn starch are sieved using a screen with a mesh
size of 0.5 to 1 mm before dispensing. [0200] b) L-arginine, BI
1356 and finally copolyvidon are dissolved resp. dispersed in
purified water at ambient temperature with a propeller mixer to
produce the "Granulation Liquid". [0201] c) Metformin HCl and corn
starch are sucked into a chamber of a suitable fluid-bed granulator
and preheated up to a product temperature target of approx.
36.degree. C. [0202] d) Immediately after the product temperature
target is reached, the "Granulation Liquid" is sprayed into the
mixture for fluid-bed granulating under dry condition to avoid
blocking during granulation. [0203] e) At the end of spraying, the
resultant granulate is dried at approx. 70 C inlet air temperature
until the desired LOD value (i.e. 1-2%) is reached. [0204] f) The
granulate is sieved using a screen with a mesh size of 0.5 to 1.0
mm. [0205] g) The sieved granulate and colloidal anhydrous silica
(Aerosil 200) are blended with a suitable blender. Aerosil 200
should be pre-sieved with a small portion of the sieved granulate
through a 0.8 mm-screen before use. [0206] h) Magnesium stearate is
passed through a 0.8 mm sieve and added into the granulate.
Subsequently the "Final Blend" is produced by final blending in the
free-fall blender. [0207] i) The "Final Blend" is compressed into
tablets with a rotary press. [0208] j) Titanium dioxide, propylene
glycol and iron oxide (yellow, red or yellow and red) are dispersed
in purified water with a high shear homo-mixer. Then, hypromellose
and talc are added and dispersed with a homo-mixer and propeller
mixer at ambient temperature to produce the "Coating Suspension".
[0209] k) The tablet cores are coated with the "Coating Suspension"
to the target weight gain to produce the "Film-coated Tablets". The
"Coating Suspension" should be stirred again before use and kept
stirring slowly during the coating (spraying) process.
[0210] Narrative more specific description of an alternative
manufacturing process for the mono-layer tablets: [0211] a)
Metformin HCl is sieved using a screen with a mesh size of 0.5 to 1
mm before weighing. [0212] b) L-arginine and copolyvidon are
dissolved in purified water at ambient temperature with a propeller
mixer to produce the "Granulation Liquid" [0213] c) Metformin HCl
and corn starch are heated in a chamber of fluid-bed granulator at
70-80.degree. C. for more than 15 min until the product temperature
reaches 60.degree. C. [0214] d) BI 1356 is added into the
container, then blended with metformin HCl and corn starch in the
fluid-bed granulator. [0215] e) The "Granulation Liquid" is sprayed
into the mixture for fluid-bed granulating under dry condition to
avoid blocking during granulation. [0216] f) At the end of
spraying, the resultant granulate is dried at 70-80.degree. C.
until the desired LOD value (i.e. 1-2%), in case the LOD is more
than 2%. [0217] g) The granulate is sieved using a screen with a
mesh size of 0.5 to 1.0 mm. [0218] h) The sieved granulate and
colloidal anhydrous silica (Aerosil 200) are blended with a
suitable blender. Aerosil 200 should be sieved with a 0.5 mm-screen
before use. [0219] i) Magnesium stearate passed through a 0.5 mm
sieve and added into the granulate. Subsequently the "Final Blend"
is produced by final blending in the blender. [0220] j) The "Final
Blend" is compressed into tablets with a rotary press. [0221] k)
Hypromellose and propylene glycol are dissolved in purified water
with a propeller mixer. Talc, titanium dioxide, and iron oxide
(yellow, or yellow and red) are dispersed in purified water with a
homo-mixer. The suspension is added into the hypromellose solution,
then mixed with a propeller mixer at ambient temperature to produce
the "Coating Suspension". [0222] l) The tablet cores are coated
with the "Coating Suspension" to the target weight gain to produce
the "Film-coated Tablets". The "Coating Suspension" should be
stirred again before use and kept stirring slowly during the
coating (spraying) process.
2. Bi-Layer Tablet
[0223] The composition of bi-layer tablets for a DPP-4 inhibitor of
this invention (BI 1356)+metformin HCl FDC (Film-coated Tablets) is
shown in Table 2.
TABLE-US-00002 TABLE 2 Composition of BI 1356 + Metformin HCl FDC
Bi-layer Tablets Dose Strength (BI 1356/metformin HCl), mg 2.5/500
2.5/850 2.5/1000 Ingredient [mg] [%] [mg] [%] [mg] [%] BI
1356-portion: (450) (100) (450) (100) (450) (100) BI 1356 2.50
0.556 2.50 0.556 2.50 0.556 L-Arginine 2.50 0.556 2.50 0.556 2.50
0.556 D-mannitol 334.75 74.39 334.75 74.39 334.75 74.39
Pregelatinized starch 45.00 10.00 45.00 10.00 45.00 10.00 Corn
starch 45.00 10.00 45.00 10.00 45.00 10.00 Copovidone 13.50 3.00
13.50 3.00 13.50 3.00 Magnesium stearate 6.75 1.50 6.75 1.50 6.75
1.50 Metformin HCl-portion: (570) (100) (969) (100) (1140) (100)
Metformin Hydrochloride 500.0 87.72 850.00 87.72 1000.00 87.72 Corn
starch 15.00 2.63 25.50 2.63 30.00 2.63 Copovidone 47.50 8.33 80.57
8.33 95.00 8.33 Colloidal Anhydrous Silica 2.50 0.44 4.25 0.44 5.00
0.44 Magnesium stearate 5.00 0.88 8.50 0.88 10.00 0.88 Total Mass
(tablet core) 1020 100.00 1419 100.00 1590 100.00 Hypromellose (5
mPa * s) 8.00 50.00 9.50 50.00 11.00 50.00 Propylene glycol 0.80
5.00 0.95 5.00 1.10 5.00 Talc 2.96 18.50 3.515 18.50 4.07 18.50
Titanium dioxide 4.00 25.00 4.75 25.00 5.50 25.00 Iron oxide,
yellow 0.20 1.25 0.2375 1.25 0.275 1.25 Iron oxide, red 0.04 0.25
0.0475 0.25 0.055 0.25 Total Mass (film-coat) 16.00 100.00 19.00
100.00 22.00 100.00 Total Mass (coated tablet) 1036 100.00 1438
100.00 1612 100.00
Manufacturing Procedure (Bi-Layer Tablets):
[0224] DPP-4 inhibitor of this invention (e.g. BI 1356)+metformin
HCl FDC bi-layer tablets are produced by a high-shear wet
granulation process (for DPP-4 inhibitor-granulate), a fluid-bed
granulation process (for metformin HCl-granulate), and bi-layer
tableting process with a multi-layer rotary press.
DPP-4 Inhibitor-Granulate:
[0225] By using a high-shear granulator the active DPP-4 inhibitor
ingredient is pre-mixed with the diluents D-mannitol and
pregelatinized starch. The mixture is moistened with granulating
liquid, containing purified water and copovidone as a binder. After
further mixing, drying and sieving, the dried granulate is blended
with magnesium stearate as a lubricant.
[0226] Narrative more specific description of the manufacturing
process for the BI 1356-granulate: [0227] a. Copovidone and
L-arginine are dissolved in purified water at ambient temperature
to produce the Granulation Liquid. [0228] b. BI 1356, mannitol and
pregelatinized starch are blended in a suitable mixer, to produce
the Pre-Mix. [0229] c. The Pre-mix is moistened with the
Granulation Liquid and subsequently granulated. [0230] d. The moist
granulate is sieved through a suitable sieve. [0231] e. The
granulate is dried at about 50.degree. C. (maximum 60.degree. C.)
in a suitable dryer until the desired loss on drying value is
obtained. [0232] f. The dried granulate is sieved through a sieve
with a mesh size of 1.0 mm. [0233] g. Magnesium stearate is passed
through a 1.0 mm sieve and added to the granulate. Subsequently the
"Final Blend A" is produced by final blending in a suitable
blender.
Metformin HCl-Granulate:
[0234] Metformin HCl and corn starch are pre-treated by heating in
a chamber of fluid-bed granulator to remove excessive HCl and/or
impurity products. After the pre-treatment of metformin HCl and
corn starch, fluid-bed granulation is conducted by spraying of
"Granulation Liquid" composed of copolyvidon (Kollidon VA64) and
purified water. After finishing of fluid-bed granulation, the
granulate is sieved with a suitable screen. The sieved granulate is
blended with colloidal anhydrous silica (Aerosil 200) and magnesium
stearate as a lubricant.
[0235] Narrative more specific description of the manufacturing
process for the Metformin HCl-granulate: [0236] a) Metformin HCl is
sieved using a screen with a mesh size of 0.5 to 1 mm before
weighing. [0237] b) Copolyvidon is dissolved in purified water at
ambient temperature with a propeller mixer to produce the
"Granulation Liquid" [0238] c) Metformin HCl and corn starch are
heated in a chamber of fluid-bed granulator at 70-80.degree. C. for
more than 15 min until the product temperature reaches 60.degree.
C. [0239] d) The "Granulation Liquid" is sprayed into the mixture
for fluid-bed granulating under dry condition to avoid blocking
during granulation. [0240] e) At the end of spraying, the resultant
granulate is dried at 70-80.degree. C. until the desired LOD value
(i.e. 1-2%), in case the LOD is more than 2%. [0241] f) The
granulate is sieved using a screen with a mesh size of 0.5 to 1.0
mm. [0242] g) The sieved granulate and colloidal anhydrous silica
(Aerosil 200) are blended with a suitable blender. Aerosil 200
should be sieved with a 0.5 mm-screen before use. [0243] h)
Magnesium stearate passed through a 0.5 mm sieve and added into the
granulate. Subsequently the "Final Blend B" is produced by final
blending in the blender.
[0244] The "Final Blend A" and "Final Blend B" are compressed into
bi-layer tablets using a multi-layer rotary press. The tablet cores
may be film-coated by an aqueous film-coating suspension,
containing hypromellose as film-forming agent, propylene glycol as
plasticizer, talc as glidant and the pigments yellow iron oxide
and/or red iron oxide and titanium dioxide.
[0245] Narrative more specific description of the manufacturing
process for the film-coating: [0246] a) Hypromellose and propylene
glycol are dissolved in purified water with a propeller mixer.
Talc, titanium dioxide, and iron oxide (yellow, red or yellow and
red) are dispersed in purified water with a homo-mixer. The
suspension is added into the hypromellose solution, then mixed with
a propeller mixer at ambient temperature to produce the "Coating
Suspension". [0247] b) The tablet cores are coated with the
"Coating Suspension" to the target weight gain to produce the
"Film-coated Tablets". The "Coating Suspension" should be stirred
again before use and kept stirring slowly during the coating
(spraying) process.
3. Tablet-in-Tablet or Bull's Eye Tablet
[0248] The composition of Tablet-in-Tablet or Bull's eye tablets
for a DPP-4 inhibitor of this invention (BI 1356)+metformin HCl FDC
(Film-coated Tablets) is shown in Table 3.
TABLE-US-00003 TABLE 3 Composition of BI 1356 + Metformin HCl FDC
Tablet-in-Tablet or Bull's Eye Tablets Dose Strength (BI
1356/metformin HCl), mg 2.5/500 2.5/850 2.5/1000 Ingredient [mg]
[%] [mg] [%] [mg] [%] BI 1356-portion: (45) (100) (45) (100) (45)
(100) BI 1356 2.50 5.56 2.50 5.56 2.50 5.56 L-Arginine 1.00 2.22
1.00 2.22 1.00 2.22 D-mannitol 30.475 67.72 30.475 67.72 30.475
67.72 Pregelatinized starch 4.50 10.00 4.50 10.00 4.50 10.00 Corn
starch 4.50 10.00 4.50 10.00 4.50 10.00 Copovidone 1.350 3.00 1.350
3.00 1.35 3.00 Magnesium stearate 0.675 1.50 0.675 1.50 6.75 1.50
Metformin HCl-portion: (570) (100) (969) (100) (1140) (100)
Metformin Hydrochloride 500.0 87.72 850.00 87.72 1000.00 87.72 Corn
starch 15.00 2.63 25.50 2.63 30.00 2.63 Copovidone 47.50 8.33 80.57
8.33 95.00 8.33 Colloidal Anhydrous Silica 2.50 0.44 4.25 0.44 5.00
0.44 Magnesium stearate 5.00 0.88 8.50 0.88 10.00 0.88 Total Mass
(tablet core) 615 100.00 1014 100.00 1185 100.00 Hypromellose (5
mPa * s) 6.00 50.00 8.00 50.00 9.00 50.00 Propylene glycol 0.60
5.00 0.80 5.00 0.90 5.00 Talc 2.22 18.50 2.96 18.50 3.33 18.50
Titanium dioxide 3.00 25.00 4.00 25.00 4.50 25.00 Iron oxide,
yellow 0.15 1.25 0.20 1.25 0.225 1.25 Iron oxide, red 0.03 0.25
0.04 0.25 0.045 0.25 Total Mass (film-coat) 12.00 100.00 16.00
100.00 18.00 100.00 Total Mass (coated tablet) 627 100.00 1030
100.00 1203 100.00
Manufacturing Procedure (Tablet-in-Tablet or Bull's Eye
Tablet):
[0249] DPP-4 inhibitor of this invention (e.g. BI 1356)+metformin
HCl FDC Tablet-in-Tablet or Bull's eye tablets are produced by a
high-shear wet granulation process (for DPP-4 inhibitor-granulate),
a rotary press (for DPP-4 inhibitor core-tablet), a fluid-bed
granulation process (for metformin HCl-granulate), and
press-coating process with a press-coater.
DPP-4 Inhibitor Core-Tablet:
[0250] By using a high-shear granulator the active DPP-4 inhibitor
ingredient is pre-mixed with the diluents D-mannitol and
pregelatinized starch. The mixture is moistened with granulating
liquid, containing purified water and copovidone as a binder. After
further mixing, drying and sieving, the dried granulate is blended
with magnesium stearate as a lubricant.
[0251] Narrative more specific description of the manufacturing
process for the BI 1356 core-tablets: [0252] a. Copovidone and
L-arginine are dissolved in purified water at ambient temperature
to produce the Granulation Liquid. [0253] b. BI 1356, mannitol and
pregelatinized starch are blended in a suitable mixer, to produce
the Pre-Mix. [0254] c. The Pre-mix is moistened with the
Granulation Liquid and subsequently granulated. [0255] d. The moist
granulate is sieved through a suitable sieve. [0256] e. The
granulate is dried at about 50.degree. C. (maximum 60.degree. C.)
in a suitable dryer until the desired loss on drying value is
obtained. [0257] f. The dried granulate is sieved through a sieve
with a mesh size of 1.0 mm. [0258] g. Magnesium stearate is passed
through a 1.0 mm sieve and added to the granulate. Subsequently the
"Final Blend" is produced by final blending in a suitable blender.
[0259] h. "Final Blend" is compressed into "BI 1356 core-tablets"
with a rotary press.
Metformin HCl-Granulate:
[0260] Metformin HCl and corn starch are pre-treated by heating in
a chamber of fluid-bed granulator to remove excessive HCl and/or
impurity products. After the pre-treatment of metformin HCl and
corn starch, fluid-bed granulation is conducted by spraying of
"Granulation Liquid" composed of copolyvidon (Kollidon VA64) and
purified water. After finishing of fluid-bed granulation, the
granulate is sieved with a suitable screen. The sieved granulate is
blended with colloidal anhydrous silica (Aerosil 200) and magnesium
stearate as a lubricant.
[0261] Narrative more specific description of the manufacturing
process for the Metformin HCl-granulate: [0262] a) Metformin HCl is
sieved using a screen with a mesh size of 0.5 to 1 mm before
weighing. [0263] b) Copolyvidon is dissolved in purified water at
ambient temperature with a propeller mixer to produce the
"Granulation Liquid" [0264] c) Metformin HCl and corn starch are
heated in a chamber of fluid-bed granulator at 70-80.degree. C. for
more than 15 min until the product temperature reaches 60.degree.
C. [0265] d) The "Granulation Liquid" is sprayed into the mixture
for fluid-bed granulating under dry condition to avoid blocking
during granulation. [0266] e) At the end of spraying, the resultant
granulate is dried at 70-80.degree. C. until the desired LOD value
(i.e. 1-2%), in case the LOD is more than 2%. [0267] f) The
granulate is sieved using a screen with a mesh size of 0.5 to 1.0
mm. [0268] g) The sieved granulate and colloidal anhydrous silica
(Aerosil 200) are blended with a suitable blender. Aerosil 200
should be sieved with a 0.5 mm-screen before use. [0269] h)
Magnesium stearate passed through a 0.5 mm sieve and added into the
granulate. Subsequently "Metformin HCl-granulate" (Final Blend) is
produced by final blending in the blender.
[0270] The "DPP-4 inhibitor core-tablets" and "Metformin
HCl-granulate" are compressed into Tablet-in-Tablet or Bull's eye
tablets using a press-coater. The difference between the
Tablet-in-Tablet and Bull's eye tablet is the position of the core
tablet.
[0271] Narrative more specific description of the manufacturing
process for the Tablet-in-Tablet: [0272] a) Fill a half of
Metformin HCl-granulate in a die. [0273] b) Place a BI 1356
core-tablet on the surface of Metformin HCl-granulate. [0274] c)
Cover the core-tablet with second half of Metformin HCl-granulate,
then compressed into the tablet (Tablet-in-Tablet).
[0275] Narrative more specific description of the manufacturing
process for the Bull's eye tablets: [0276] a) Fill Metformin
HCl-granulate in a die. [0277] b) Place the BI 1356 core-tablet on
the Metformin HCl-granulate in the die, then compressed into the
tablet (Bull's eye tablet).
[0278] The tablets may be film-coated by an aqueous film-coating
suspension, containing hypromellose as film-forming agent,
propylene glycol as plasticizer, talc as glidant and the pigments
yellow iron oxide and/or red iron oxide and titanium dioxide.
[0279] Narrative more specific description of the manufacturing
process for the film-coating: [0280] a) Hypromellose and propylene
glycol are dissolved in purified water with a propeller mixer.
Talc, titanium dioxide, and iron oxide (yellow, red or yellow and
red) are dispersed in purified water with a homo-mixer. The
suspension is added into the hypromellose solution, then mixed with
a propeller mixer at ambient temperature to produce the "Coating
Suspension". [0281] b) The tablet cores are coated with the
"Coating Suspension" to the target weight gain to produce the
"Film-coated Tablets". The "Coating Suspension" should be stirred
again before use and kept stirring slowly during the coating
(spraying) process.
4. DPP-4 Inhibitor--Drug Layering on Metformin HCl Tablet
(Film-Coating for Drug-Loading)
[0282] The composition of a DPP-4 inhibitor of this invention (BI
1356)+metformin HCl FDC (Film-coated Tablets) which are prepared by
drug loading by film-coating on the Metformin HCl Tablet is shown
in Table 4.
TABLE-US-00004 TABLE 4 Composition of BI 1356 + Metformin HCl FDC
BI 1356-Coating on Metformin HCl Tablet Dose Strength (BI
1356/metformin HCl), mg 2.5/500 2.5/850 2.5/1000 Ingredient [mg]
[%] [mg] [%] [mg] [%] Metformin HCl-portion: (570) (100) (969)
(100) (1140) (100) Metformin Hydrochloride 500.0 87.72 850.0 87.72
1000.0 87.72 Corn starch 15.0 2.63 25.5 2.63 30.0 2.63 Copovidone
47.5 8.33 80.57 8.33 95.0 8.33 Colloidal Anhydrous Silica 2.5 0.44
4.25 0.44 5.0 0.44 Magnesium stearate 5.0 0.88 8.5 0.88 10.0 0.88
Total Mass (tablet core) 570 100.00 969 100.00 1140 100.00
Seal-coat (seal-coating): (12) (100) (16) (100) (18) (100)
Hypromellose (5 mPa * s) 6.00 50.00 8.00 50.00 9.00 50.00 Propylene
glycol 0.60 5.00 0.80 5.00 0.90 5.00 Talc 2.22 18.50 2.96 18.50
3.33 18.50 Titanium dioxide 3.00 25.00 4.00 25.00 4.50 25.00 Iron
oxide, yellow 0.15 1.25 0.20 1.25 0.225 1.25 Iron oxide, red 0.03
0.25 0.04 0.25 0.045 0.25 Drug-layer (drug-loading): (25) (100)
(25) (100) (25) (100) BI 1356 2.50 10.00 2.50 10.00 2.50 10.00
L-Arginine 2.50 10.00 2.50 10.00 2.50 10.00 Hypromellose (5 mPa *
s) 18.00 72.00 18.00 72.00 18.00 72.00 Propylene glycol 2.00 8.00
2.00 8.00 2.00 8.00 Over-coat (over-coating): (12) (100) (16) (100)
(18) (100) Hypromellose (5 mPa * s) 6.00 50.00 8.00 50.00 9.00
50.00 Propylene glycol 0.60 5.00 0.80 5.00 0.90 5.00 Talc 2.22
18.50 2.96 18.50 3.33 18.50 Titanium dioxide 3.00 25.00 4.00 25.00
4.50 25.00 Iron oxide, yellow 0.15 1.25 0.20 1.25 0.225 1.25 Iron
oxide, red 0.03 0.25 0.04 0.25 0.045 0.25 Total Mass (film-coat) 49
100.00 57 100.00 61 100.00 Total Mass (coated tablet) 619 100.00
1026 100.00 1201 100.00
Manufacturing Procedure (DPP-4 Inhibitor-Drug Layering by
Film-Coating on Metformin HCl Tablet):
[0283] DPP-4 inhibitor (e.g. BI 1356)+metformin HCl FDC with drug
coating is produced by a fluid-bed granulation process, a
conventional tableting process, and film-coating process with three
steps: seal-coating, drug-loading and over-coating. The
over-coating may be able to be skipped by combining with the
drug-loading, if the stability is acceptable.
Metformin HCl Tablets:
[0284] Metformin HCl and corn starch are pre-treated by heating in
a chamber of fluid-bed granulator to remove excessive HCl and/or
impurity products. After the pre-treatment of metformin HCl and
corn starch, fluid-bed granulation is conducted by spraying of
"Granulation Liquid" composed of copolyvidon (Kollidon VA64) and
purified water. After finishing of fluid-bed granulation, the
granulate is sieved with a suitable screen. The sieved granulate is
blended with colloidal anhydrous silica (Aerosil 200) and magnesium
stearate as a lubricant. The final blend is compressed into the
tablets with a conventional rotary press.
[0285] Narrative more specific description of the manufacturing
process for the Metformin HCl-granulate: [0286] a) Metformin HCl is
sieved using a screen with a mesh size of 0.5 to 1 mm before
weighing. [0287] b) Copolyvidon is dissolved in purified water at
ambient temperature with a propeller mixer to produce the
"Granulation Liquid" [0288] c) Metformin HCl and corn starch are
heated in a chamber of fluid-bed granulator at 70-80.degree. C. for
more than 15 min until the product temperature reaches 60.degree.
C. [0289] d) The "Granulation Liquid" is sprayed into the mixture
for fluid-bed granulating under dry condition to avoid blocking
during granulation. [0290] e) At the end of spraying, the resultant
granulate is dried at 70-80.degree. C. until the desired LOD value
(i.e. 1-2%), in case the LOD is more than 2%. [0291] f) The
granulate is sieved using a screen with a mesh size of 0.5 to 1.0
mm. [0292] g) The sieved granulate and colloidal anhydrous silica
(Aerosil 200) are blended with a suitable blender. Aerosil 200
should be sieved with a 0.5 mm-screen before use. [0293] h)
Magnesium stearate passed through a 0.5 mm sieve and added into the
granulate. Subsequently "Final Blend" is produced by final blending
in the blender. [0294] i) The "Final Blend" is compressed into the
tablets with a conventional rotary press.
[0295] Film-Coating:
[0296] The tablets are film-coated by (1) seal-coating: by an
aqueous film-coating suspension, containing hypromellose as
film-forming agent, propylene glycol as plasticizer, talc as
glidant and the pigments yellow iron oxide and/or red iron oxide
and titanium dioxide, (2) drug-loading: by an aqueous film-coating
suspension, containing hypromellose as film-forming agent,
propylene glycol as plasticizer, BI 1356 as drug substance, and
L-arginine as stabilizer, and (3) over-coating: by an aqueous
film-coating suspension, containing hypromellose as film-forming
agent, propylene glycol as plasticizer, talc as glidant and the
pigments yellow iron oxide and/or red iron oxide and titanium
dioxide,
[0297] Narrative more specific description of the manufacturing
process for the film-coating with a coating machine: [0298] a)
Hypromellose and propylene glycol are dissolved in purified water
with a propeller mixer. Talc, titanium dioxide, and iron oxide
(yellow, red or yellow and red) are dispersed in purified water
with a homo-mixer. The suspension is added into the hypromellose
solution, then mixed with a propeller mixer at ambient temperature
to produce the "Coating Suspension" for "seal-coating" and
"over-coating". [0299] b) Hypromellose, propylene glycol and
L-arginine are dissolved in purified water with a propeller mixer.
BI 1356 (active drug) is added into the hypromellose solution, then
dispersed with a propeller mixer at ambient temperature to produce
the "Drug Suspension" for "drug-loading". [0300] c) The Metformin
HCl tablets are coated with the "Coating Suspension" to the target
weight gain to form the "seal-coat". The "Coating Suspension"
should be stirred again before use and kept stirring slowly during
the coating (spraying) process. [0301] d) Following the
seal-coating, the "Drug Suspension" is applied to the surface of
the Metformin HCl tablets to form the "drug layer" (drug loading).
The "Drug Suspension" should be stirred again before use and kept
stirring slowly during the coating (spraying) process. The coating
end point can be determined by available PAT (Process Analysis
Technology). [0302] e) After drug loading the "Coating Suspension"
is applied to the BI 1356 drug-loaded tablets to form the
"over-coat" and to produce the "Film-coated Tablets". The "Coating
Suspension" should be stirred again before use and kept stirring
slowly during the coating (spraying) process.
Product Description:
[0303] The product description of BI 1356+Metformin HCl FDC
mono-layer tablets (tablet core and film-coated tablets) is shown
in Table 8 and Table 9, respectively.
TABLE-US-00005 TABLE 8 Product Description of BI 1356 + Metformin
HCl FDC Mono-layer Tablets (Tablet Core) Dose Strength (BI
1356/metformin HCl), mg Items 2.5/500 2.5/850 2.5/1000 Tablet shape
Oval, biconvex Oval, biconvex Oval, biconvex Tablet size [mm] 16.2
.times. 8.5 19.1 .times. 9.3 21.0 .times. 9.6 Color white Weight
590 1000 1180 Thickness [mm], Approx. 5.8 Approx. 7.3 Approx. 7.6
(Mean) Crushing strength [N], .gtoreq.100, .gtoreq.150,
.gtoreq.150, (Mean) Approx. 140 Approx. 190 Approx. 200
Disintegration time .ltoreq.15 .ltoreq.15 .ltoreq.15 [min]
Friability [%] .ltoreq.0.5 .ltoreq.0.5 .ltoreq.0.5
TABLE-US-00006 TABLE 9 Product Description of BI 1356 + Metformin
HCl FDC Mono-layer Tablets (Coated) Dose Strength (BI
1356/metformin HCl), mg Items 2.5/500 2.5/850 2.5/1000 Color light
yellow light orange light red Weight 602 1016 1198 Thickness [mm],
Approx. 5.9 Approx. 7.4 Approx. 7.7 (Mean) Crushing strength [N]
.gtoreq.100, .gtoreq.150, .gtoreq.150, (Mean) Approx. 180 Approx.
240 Approx. 250 Disintegration time .ltoreq.15 .ltoreq.15
.ltoreq.15 [min]
Stability Data:
[0304] Stability data of BI 1356+Metformin HCl FDC mono-layer
tablets (tablet core) with or without L-arginine is shown in the
following tables (over 2 weeks, 1 month and 3 months):
2.5+500 mg tablets+12.5 mg arginine:
TABLE-US-00007 60.degree. C. glass bottle Test parameter Initial 2
W 1 M 3 M Degradation BI 1356 (%) <0.2 <0.2 <0.2 <0.2
Total
2.5+500 mg tablets+0 mg arginine:
TABLE-US-00008 60.degree. C. glass bottle Test parameter Initial 2
W 1 M 3 M Degradation BI 1356 (%) <0.2 1.1 2.9 8.5 Total
2.5+1000 mg tablets+25 mg arginine:
TABLE-US-00009 60.degree. C. glass bottle Test parameter Initial 2
W 1 M 3 M Degradation BI 1356 (%) <0.2 <0.2 <0.2 0.2
Total
2.5+1000 mg tablets+0 mg arginine:
TABLE-US-00010 60.degree. C. glass bottle Test parameter Initial 2
W 1M 3M Degradation BI 1356 (%) <0.2 1.9 4.7 13.6 Total
* * * * *