Title of Invention

SOLID PREPARATION COMPRISING AN INSULIN SENSITIZER AND AN ACTIVE INGREDIENT

Abstract A solid preparation having a phase wherein pioglitazone or salt thereof and a biguanide having a ratio of median size thereof to the median size of said pioglitazone or salt thereof of 0.5 to 15 are uniformly dispersed, wherein the pioglitazone or salt thereof has a median size of 1-25 µm and the biguanide has a median size of 10-100 µm.
Full Text

DESCRIPTION
SOLID PREPARATION
Technical Field
The present invention relates to a solid
preparation comprising an insulin sensitizer and an
active ingredient (except insulin sensitizers), which is
useful as a therapeutic drug for diabetes and the like.
Background Art
There are the following reports on preparations
containing an insulin sensitizer such as a
thiazolidinedione and the like and an active ingredient
(except insulin sensitizers).
1) A pharmaceutical agent containing an insulin
sensitizer in combination with at least one member from
an (α-glucosidase inhibitor, an aldose reductase
inhibitor, a biguanide, a statin compound, a squalene
synthetase inhibitor, a fibrate compound, an LDL
catabolism enhancer and an angiotensin converting enzyme
inhibitor (EP749751A).
2) A pharmaceutical composition containing an insulin
sensitizer, a biguanide antihyperglycaemic agent and a
pharmaceutically acceptable carrier (W098/57634,
US2002/0004515A).
3) A pharmaceutical composition containing a
thiazolidinedione, metformin hydrochloride and a
pharmaceutically acceptable carrier, wherein the
thiazolidinedione is formulated upon the surface of
metformin hydrochloride (W001/35940) ..
4) A pharmaceutical composition containing a
thiazolidinedione, metformin hydrochloride and a
pharmaceutically acceptable carrier, wherein the
thiazolidinedione and metformin hydrochloride are
respectively dispersed in pharmaceutically acceptable
carriers of their own (WO01/35941),

5) A core formulation comprising (a) a first layer
containing pioglitazone hydrochloride or a
pharmaceutically acceptable salt thereof as an active
ingredient, and (b) a core containing a biguanide as an
active ingredient, wherein at least a portion of the
core is enclosed by said first layer (WO01/82875).
6) a composition for treating diabetes, which contains
an insulin sensitizer and an antidiabetic agent
(USP6153632, WO02/04024).
Disclosure of the Invention
The present invention aims at providing a solid
preparation comprising an insulin sensitizer and an
active ingredient (except insulin sensitizers), which is
useful as a therapeutic drug for diabetes and the like
and which is superior in preparation characteristics
such as content uniformity and dissolution property of
the insulin sensitizer and the active ingredient (except
insulin sensitizers), preparation hardness and the like.
The present inventors have found that a solid
preparation superior in content uniformity of insulin
sensitizer and preparation hardness can be obtained by,
when producing a solid preparation containing an insulin
sensitizer and an active ingredient (except insulin
sensitizers), uniformly dispersing both components. The
present inventors have further studied based on this
finding and, as a result, completed the present
invention.
That is, the present invention relates to
1) a solid preparation having a phase wherein an insulin
sensitizer and an active ingredient (except insulin
sensitizers) are uniformly dispersed, and a hardness of
100 to 400N;
2) the solid preparation of the aforementioned 1),
wherein the active ingredient is a biguanide;

3) the solid preparation of the aforementioned 2),
wherein the biguanide is metformin hydrochloride;
4) a solid preparation having a phase wherein an insulin
sensitizer and an active ingredient (except insulin
sensitizers) having a ratio of median size thereof to
the median size of said insulin sensitizer of 0.5 to 15
are uniformly dispersed;
5) the solid preparation of the aforementioned 4),
wherein the active ingredient is a biguanide;
6) the solid preparation of the aforementioned 5),
wherein the biguanide is metformin hydrochloride;
7) a solid preparation having a phase wherein an insulin
sensitizer and an active ingredient (except insulin
sensitizers) are uniformly dispersed, and a coefficient
of variation of the insulin sensitizer content of not
more than 6%;
8) the solid preparation of the aforementioned 7),
wherein the active ingredient is a biguanide;
9) the solid preparation of the aforementioned 8),
wherein the biguanide is metformin hydrochloride;

10) a solid preparation having a phase wherein an
insulin sensitizer and an active ingredient (except
insulin sensitizers) are uniformly dispersed, which
elutes out not less than 70% of the insulin sensitizer
at 30 min after in a dissolution test according to a
Paddle Method using a hydrochloric acid-potassium
chloride buffer (pH 2.0) as a test solution at 37°C, 50
rpm;
11) the solid preparation of the aforementioned 10),
wherein the active ingredient is a biguanide;
12) the solid preparation of the aforementioned 11),
wherein the biguanide is metformin hydrochloride;
13) a solid preparation having a phase wherein
pioglitazone hydrochloride and metformin hydrochloride

having a ratio of median size thereof to the median size
of said pioglitazone hydrochloride of 0.5 to 15 are
uniformly dispersed;
14) the solid preparation of the aforementioned 13),
which is film-coated; and the like.
The insulin sensitizer to be used in the present
invention may be any pharmaceutical agent as long as it
restores damaged insulin receptor function and improves
insulin resistance. As specific examples of the insulin
sensitizer, the following compounds and salts thereof
can be mentioned:
5-[4-[2- (5-ethyl-2-pyridyl)ethoxy]benzyl]-2,4-
thiazolidinedione (general name: pioglitazone);
5-[[4-[2-(methyl-2-pyridinylamino)ethoxy]phenyl]methyl] -
2,4-thiazolidinedione (general name: rosiglitazone);
5-[ [6- (2-fluorobenzyloxy)-2-naphthyl]methyl]-2,4-
thiazolidinedione (general name: netoglitazone);
5-(2,4-dioxothiazolidin-5-ylmethyl)-2-methoxy-N-[4-
(trifluoromethyl)benzyl]benzamide (KRP-297);
4-[4-[2-(5-methyl-2-phenyloxazol-4-
yl)ethoxy]benzyl]isoxazolidine-3,5-dione (JTT-501);
FK-614; Tesaglitazar (AZ-242); Ragaglitazar (NN-622);
BMS-298585; ONO-5816; CS-011; BM-13-1258; LM-4156; MBX-
102; LY-519818; MX-6054; LY-510929; and (E)-4-[4-(5-
methyl-2-phenyl-4-oxazolylmethoxy)benzyloxyimino]-4-
phenylbutyric acid.
As the salt of the above-mentioned compound,
pharmacologically acceptable salts such as salts with
inorganic base, salts with organic base, salts with
inorganic acid, salts with organic acid, salts with
basic or acidic amino acid and the like can be mentioned.
As preferable examples of the salts with inorganic
base, for example, salts with alkali metals (e.g. sodium,
potassium and the like), alkaline earth metals (e.g.

calcium, magnesium and the like), aluminum, ammonium and
the like can be mentioned.
As preferable examples of the salts with organic
base, for example, salts with trimethylamine,
triethylamine, pyridine, picoline, ethanolamine,
diethanolamine, triethanolamine, dicyclohexylamine, N,N-
dibenzylethylenediamine and the like can be mentioned.
As preferable examples of the salts with inorganic
acid, for example, salts with hydrochloric acid,
hydrobromic acid, nitric acid, sulfuric acid, phosphoric
acid and the like can be mentioned.
As preferable examples of the salts with organic
acid, for example, salts with formic acid, acetic acid,
trifluoroacetic acid, fumaric acid, oxalic acid,
tartaric acid, maleic acid, citric acid, succinic acid,
malic acid, methanesulfonic acid, benzenesulfonic acid,
p-toluenesulfonic acid and the like can be mentioned.
As preferable examples of the salts with basic
amino acid, for example, salts with arginine, lysine,
ornithine and the like can be mentioned, and as
preferable examples of the salts with acidic amino acid,
for example, salts with aspartic acid, glutamic acid and
the like can be mentioned.
The insulin sensitizer is preferably pioglitazone
hydrochloride, rosiglitazone maleate and the like, and
particularly preferably pioglitazone hydrochloride.
In the present invention, two or more kinds of the
insulin sensitizers may be used at an appropriate ratio.
The median size of the insulin sensitizer is
preferably 1-100 µm, more preferably 1-70 µm.
Particulraly, when the insulin sensitizer is
pioglitazone hydrochloride, the median size of
pioglitazone hydrochloride is preferably 1-25 µm, more
preferably 2-21 µm. Particularly, by the use of

pioglitazone hydrochloride having a median size of 2 to
10 µm, a solid preparation superior in dissolution
property of pioglitazone hydrochloride can be obtained.
The above-mentioned preferable median size is
applied to an insulin sensitizer used as a starting
material (including a pulverized product obtained by
pulverizing, a mixed pulverized product obtained by
pulverizing together with an excipient, and the like
during the production process of a solid preparation)
for producing the solid preparation of the present
invention. In other words, the median size of an insulin
sensitizer may have changed due to the coagulation of
insulin sensitizer and the like, during the production
process of the solid preparation of the present
invention, or during the process of preserving the solid
preparation after production.
In the present specification, by the median size
is meant a particle size that divides crude particles
from fine granules at 50% each in weight distribution or
number distribution. The median size can be measured
using, for example, a known measurement device such as a
laser diffraction particle distribution apparatus (e.g.,
HELOS&RODOS (trade name, manufactured by SYMPATEC GmbH)
and the like.
As the insulin sensitizer having a desired median
size mentioned above, for example, a commercially
available product can be used. In addition, the insulin
sensitizer having a desired median size can be also
produced by pulverizing an insulin sensitizer having a
large median size together with an excipient such as
microcrystalline cellulose and the like as necessary.
Here, the pulverization is performed according to a
known method using, for example, a cutter mill, a hammer
mill, a jet mill and the like.

In particular, when a solid preparation is
produced using an insulin sensitizer having a weak
binding force and a comparatively large median size, use
of a large amount of additives such as a binder and the
like, and the like may be designed to achieve sufficient
preparation hardness. However, by making the median size
of an insulin sensitizer smaller, a large amount of
additives such as a binder and the like becomes
unnecessary, which makes it possible to increase the
drug content of a solid preparation.
As for the insulin sensitizer having a desired
median size mentioned above, the dispersibility thereof
is preferably such that "particles of not more than 0.1
µm are contained at not more than 10% of the total
amount, and particles of not less than 1000 µm are
contained at not more than 10% of the total amount".
As the active ingredient (except insulin
sensitizers) to be used in the present invention,
therapeutic agents for diabetes, therapeutic agents for
diabetic complications, therapeutic agents for
hyperlipidemia, antihypertensive agents, antiobesity
agents, diuretics, antithrombotic agents and the like
can be mentioned. These active ingredients may be a low-
molecular-weight compound, a high-molecular-weight
protein, polypeptide or antibody, a vaccine and the like.
The active ingredient may be a mixture of two or more
kinds of components at an appropriate ratio.
Examples of the therapeutic agents for diabetes
include insulin preparations (e.g., animal insulin
preparations extracted from the pancreas of bovine,
swine; human insulin preparations synthesized by genetic
engineering techniques using Escherichia coli or yeast;
zinc insulin; protamine zinc insulin; fragments or
derivatives of insulin (e.g., INS-1 etc.) and the like),

α-glucosidase inhibitors (e.g., voglibose, acarbose,
miglitol, emiglitate etc.), biguanide (e.g., phenforrain,
metformin, buformin, or a salt thereof (e.g.,
hydrochloride, fumarate, succinate) etc.), insulin
secretagogues [sulfonylureas (e.g., tolbutamide,
glibenclamide, gliclazide, chlorpropamide, tolazamide,
acetohexamide, glyclopyramide, glimepiride, glipizide,
glybuzole etc.), repaglinide, nateglinide, mitiglinide
or calcium salt hydrate thereof, GLP-1 etc.],
dipeptidylpeptidase IV inhibitors (e.g., NVP-DPP-278,
PT-100, NVP-DDP-728, LAF237, etc.), 03 agonists (e.g.,
CL-316243, SR-58611-A, UL-TG-307, SB-226552, AJ-9677,
BMS-196085, AZ-40140 etc.), amylin agonists (e.g.,
pramlintide etc.), phosphotyrosine phosphatase
inhibitors (e.g., vanadic acid etc.), gluconeogenesis
inhibitors (e.g., glycogen phosphorylase inhibitors,
glucose-6-phosphatase inhibitors, glucagon antagonists
etc.) and SGLUT (sodium-glucose cotransporter)
inhibitors (e.g., T-1095 etc.).
Examples of the therapeutic agents for diabetic
complications include aldose reductase inhibitors (e.g.,
tolrestat, epalrestat, zenarestat, zopolrestat,
minalrestat, fidarestat (SNK-860), CT-112 etc.),
neurotrophic factors (e.g., NGF, NT-3, BDNF etc.),
neurotrophin production-secretion promoters [e.g.,
neurotrophin production-secretion promoters described in
WO01/14372 (e.g., 4-(4-chlorophenyl)-2-(2-methyl-l-
imidazolyl)-5-(3- (2-methylphenoxy)propyl)oxazole and the
like)], PKC inhibitors (e.g., LY-333531 etc.), AGE
inhibitors (e.g., ALT946, pimagedine, pyratoxanthine, N-
phenacylthiazolium bromide (ALT766), EXO-226 etc.),
active oxygen scavengers (e.g., thioctic acid etc.) and
cerebral vasodilators (e.g., tiapride, mexiletine etc.).
Examples of the therapeutic agents for

hyperlipidemia include HMG-CoA reductase inhibitors
(e.g., pravastatin, simvastatin, lovastatin,
atorvastatin, fluvastatin, lipantil, cerivastatin,
itavastatin, ZD-4522, or their salts (e.g., sodium salts,
calcium salts, etc.), etc.), fibrate compounds (e.g.,
bezafibrate, beclofibrate, binifibrate, ciprofibrate,
clinofibrate, clofibrate, clofibric acid, etofibrate,
fenofibrate, gemfibrozil, nicofibrate, pirifibrate,
ronifibrate, simfibrate, theofibrate etc.), squalene
synthase inhibitors (e.g., compounds described in
WO97/10224 (e.g., 1-[[(3R,5S)-1-(3-acetoxy-2,2-
dimethylpropyl)-7-chloro-5-(2,3-dimethoxyphenyl)-2-oxo-
1,2,3,5-tetrahydro-4,l-benzooxazepin-3-
yl]acetyl]piperidine-4-acetic acid, etc.), ACAT
inhibitors (e.g., Avasimibe, Eflucimibe etc.), anion
exchange resins (e.g., colestyramine etc.), probucol,
nicotinic acid drugs (e.g., nicomol, niceritrol etc.),
ethyl icosapentate, plant sterols (e.g., soysterol, γ-
oryzanol etc.) and the like.
Examples of the antihypertensive agents include
angiotensin converting enzyme inhibitors (e.g.,
captopril, enalapril, delapril etc.), angiotensin II
antagonists (e.g., candesartan cilexetil, losartan,
eprosartan, valsartan, telmisartan, irbesartan,
tasosartan etc.), calcium antagonists (e.g., manidipine,
nifedipine, nicardipine, amlodipine, efonidipine etc.),
potassium channel openers (e.g., levcromakalim, L-27152,
AL 0671, NIP-121 etc.), clonidine and the like.
Examples of the antiobesity agents include
antiobesity agents acting on the central nervous system
(e.g., dexfenfluramine, fenfluramine, phentermine,
sibutramine, amfepramone, dexamphetamine, mazindol,
phenylpropanolamine, clobenzorex etc.), pancreatic
lipase inhibitors (e.g., orlistat etc.), β3 agonists

(e.g., CL-316243, SR-58611-A, UL-TG-307, SB-226552, AJ-
9677, BMS-196085, AZ-40140 etc.), peptidic anorexiants
(e.g., leptin, CNTF (Ciliary Neurotropic Factor) etc.),
cholecystokinin agonists (e.g., lintitript, FPL-15849
etc.) and the like.
Examples of the diuretics include xanthine
derivatives (e.g., sodium salicylate and theobromine,
calcium salicylate and theobromine etc.), thiazide
preparations (e.g., ethiazide, cyclopenthiazide,
trichloromethiazide, hydrochlorothiazide,
hydroflumethiazide, benzylhydrochlorothiazide,
penflutizide, polythiazide, methyclothiazide etc.),
antialdosterone preparations (e.g., spironolactone,
triamterene etc.), carbonate dehydratase inhibitors
(e.g., acetazolamide etc.), chlorobenzenesulfonamide
preparations (e.g., chlortalidone, mefruside, indapamide
etc.), azosemide, isosorbide, etacrynic acid, piretanide,
bumetanide, furosemide and the like.
Examples of the antithrombotic agents include
heparin (e.g., heparin sodium, heparin calcium,
dalteparin sodium etc.), warfarin (e.g., warfarin
potassium etc.), anti-thrombin drugs (e.g., aragatroban
etc.), thrombolytic agents (e.g., urokinase, tisokinase,
alteplase, nateplase, monteplase, pamiteplase etc.),
platelet aggregation inhibitors (e.g., ticlopidine
hydrochloride, cilostazol, ethyl icosapentate, beraprost
sodium, sarpogrelate hydrochloride etc.) and the like.
The active ingredient (except insulin sensitizers)
to be used in the present invention is preferably a
therapeutic agent for diabetes, more preferably a
biguanide and a sulfonylurea, particularly preferably
metformin or a salt thereof (preferably metformin
hydrochloride).
The median size of the active ingredient (except

insulin sensitizers) is preferably 0.5 to 1000 µm, more
preferably 1 to 200 µm. Particularly, when the active
ingredient is a biguanide (preferably metformin
hydrochloride), the median size of the biguanide
(preferably metformin hydrochloride) is preferably 10 to
100 µm, more preferably 10 to 80 µm.
The above-mentioned preferable median size is
applied to an active ingredient (except insulin
sensitizers) used as a starting material (including a
pulverized product obtained by pulverizing, a mixed
pulverized product obtained by pulverizing together with
an excipient, and the like, during the production
process of a solid preparation) for producing the solid
preparation of the present invention. In other words,
the median size of an active ingredient may have changed
due to the coagulation of the active ingredient and the
like, during the production process of the solid
preparation of the present invention, or during the
process of preserving the solid preparation after
production.
As the active ingredient (except insulin
sensitizers) having a desired median size mentioned
above, for example, a commercially available product can
be used. In addition, the active ingredient having a
desired median size can be also produced by pulverizing
an active ingredient having a large median size. Here,
the pulverization is performed according to a known
method using, for example, a cutter mill, a hammer mill,
a jet mill and the like.
In particular, when a solid preparation is produced
using an active ingredient having a weak binding force
and a comparatively large median size, use of a large
amount of additives such as a binder and the like, and
the like may be designed to achieve sufficient

preparation hardness. However, by making the median size
of an active ingredient smaller, a large amount of
additives such as a binder and the like becomes
unnecessary, which makes it possible to increase the
drug content of the solid preparation.
As for the active ingredient (except insulin
sensitizers) having a desired median size mentioned
above, the dispersibility thereof is preferably such
that "particles of not more than 0.1 µm are contained at
not more than 1% of the total amount, and particles of
not less than 3000 urn are contained at not more than 10%
of the total amount".
The ratio of the median size of the aforementioned
active ingredient (except insulin sensitizers) to the
median size of the aforementioned insulin sensitizer is
preferably 0.5 to 15, more preferably 0.5 to 10.
By employing such ratio of the median size, the
insulin sensitizer and the active ingredient can be
dispersed more uniformly.
The above-mentioned preferable ratio is applied to
an insulin sensitizer and an active ingredient used as a
starting material (including a pulverized product
obtained by pulverizing, a mixed pulverized product
obtained by pulverizing together with an excipient, and
the like, during the production process of a solid
preparation) for producing the solid preparation of the
present invention. In other words, the above-mentioned
preferable ratio may have changed during the production
process of the solid preparation of the present
invention, or during the process of preserving the solid
preparation after production.
The most preferable combination of an insulin
sensitizer and an active ingredient (except insulin
sensitizers) in the solid preparation of the present

invention is that of pioglitazone hydrochloride and
metformin hydrochloride.
The solid preparation of the present invention has
a phase (part) wherein an insulin sensitizer and an
active ingredient (except insulin sensitizers) are
uniformly dispersed.
That is, the solid preparation of the present
invention may be a preparation wherein an insulin
sensitizer and an active ingredient (except insulin
sensitizers) are uniformly dispersed in the entirety of
the preparation, or may be a preparation partially
containing such preparation, such as a coated
preparation obtained by coating a preparation wherein an
insulin sensitizer and an active ingredient (except
insulin sensitizers) are uniformly dispersed in the
entirety of the preparation, and the like.
In the present invention, as a dosage form of a
solid preparation, for example, tablet, capsule, granule,
powder, troche and the like can be mentioned. The dosage
form of a solid preparation is preferably tablet.
Furthermore, the shape of the solid preparation may be
any such as round, caplet, oblong and the like. When the
weight of the solid preparation is large, the shapes of
caplet and oblong are preferable from the aspect of easy
administration.
The solid preparation of the present invention may
contain an additive conventionally used for the
technical field of formulation of preparations. As such
additive, for example, excipient, disintegrant, binder,
lubricant, coloring agent, pH adjusting agent,
surfactant, stabilizer, acidulant, flavor, glidant and
the like can be mentioned. These additives are used in
the amounts conventionally employed in the technical
field of formulation of preparations.

As the excipient, for example, starches such as
cornstarch, potato starch, wheat starch, rice starch,
partly pregelatinized starch, pregelatinized starch,
porous starch and the like; sugars and sugar alcohols
such as lactose, fructose, glucose, mannitol, sorbitol
and the like; anhydrous calcium phosphate,
microcrystalline cellulose, precipitated calcium
carbonate, calcium silicate and the like can be
mentioned.
As the disintegrant, for example, carboxymethyl
cellulose, calcium carboxymethyl cellulose, sodium
carboxymethyl starch, croscarmellose sodium,
crospovidone, low-substituted hydroxypropyl cellulose,
hydroxypropyl starch and the like are used. The amount
of the disintegrant to be used is preferably 0.5-25
parts by weight, more preferably 1-15 parts by weight,
per 100 parts by weight of the solid preparation.
As the binder, for example, hydroxypropyl
cellulose, hydroxypropylmethyl cellulose,
polyvinylpyrrolidone, gum arabic powder and the like can
be mentioned. The amount of the binder to be used is
preferably 0.1-50 parts by weight, more preferably 0.5-
40 parts by weight, per 100 parts by weight of the solid
preparation. The binder is preferably hydroxypropyl
cellulose or polyvinylpyrrolidone. Particularly, when
the active ingredient to be used in the present
invention is metformin hydrochloride,
polyvinylpyrrolidone is preferable.
Preferable examples of the lubricant include
magnesium stearate, calcium stearate, talc, sucrose
esters of fatty acids, sodium stearyl fumarate and the
like.
As the coloring agent, for example, food colors
such as Food Yellow No. 5, Food Red No. 2, Food Blue No.

2 and the like, food lake colors, diiron trioxide and
the like can be mentioned.
As the pH adjusting agent, citrate, phosphate,
carbonate, tartrate, fumarate, acetate, amino acid salt
and the like can be mentioned.
As the surfactant, sodium lauryl sulfate,
polysorbate 80, polyoxyethylene (160) polyoxypropylene
(30) glycol and the like can be mentioned.
As the stabilizer, for example, tocopherol,
tetrasodium edetate, nicotinamide, cyclodextrins and the
like can be mentioned.
As the acidulant, for example, ascorbic acid,
citric acid, tartaric acid, malic acid and the like can
be mentioned.
As the flavor, for example, menthol, peppermint
oil, lemon oil, vanillin and the like can be mentioned.
As the glidant, for example, light silicic
anhydride, hydrated silicon dioxide and the like can be
mentioned. As used herein, light silicic anhydride may
be any as long as it contains silicon dioxide hydrate
(SiO2-nH2O) (n is an integer) as the main component, and
as concrete examples thereof, Sylysia320 (trade name,
Fuji Silysia Chemical Ltd.), AEROSIL200 (trade name,
NIPPON AEROSIL CO., LTD.) and the like can be mentioned.
The above-mentioned additives may be used in a
mixture of two or more kinds thereof at an appropriate
ratio.
The insulin sensitizer content of the solid
preparation of the present invention is, for example,
0.01-100 parts by weight, preferably 1-99 parts by
weight, per 100 parts by weight of the solid preparation
of the present invention.
Particularly, when the insulin sensitizer is
pioglitazone hydrochloride, the pioglitazone

hydrochloride content of the solid preparation of the
present invention is, for example, preferably 0.01-15
parts by weight, more preferably 0.5-10 parts by weight,
per 100 parts by weight of the solid preparation of the
present invention.
The content of the active ingredient (except
insulin sensitizers) in the solid preparation of the
present invention is, for example, 0.1-100 parts by
weight, preferably 1-99 parts by weight, per 100 parts)
by weight of the solid preparation of the present
invention.
Particularly, when the active ingredient (except
insulin sensitizers) is biguanide (preferably metformin
hydrochloride), the biguanide (preferably metformin
hydrochloride) content of the solid preparation of the
present invention is, for example, preferably 5-98 parts
by weight, more preferably 15-96 parts by weight, per
100 parts by weight of the solid preparation of the
present invention.
The solid preparation of the present invention can
be produced by, for example, uniformly mixing an insulin
sensitizer and an active ingredient (except insulin
sensitizers) with the aforementioned additives as
necessary, or uniformly mixing after granulating, and
then compression-molding.
Here, mixing is performed using, for example, a
mixer such as a V-type mixer, a tumbler mixer and the
like, and granulation is performed using, for example, a
high speed mixer granulator, a fluid bed granulator-
dryer and the like. For compression-molding, for example,
punching is done generally at a pressure of 5-35 kN/cm2
using a single punch tableting machine, a rotary
tableting machine and the like.
For compression-molding using the aforementioned

tableting machine, a tapered die is preferably used for
preventing capping.
The solid preparation of the present invention is
preferably produced by granulating an insulin sensitizer
and an active ingredient (except insulin sensitizers)
together with additives as necessary, such as excipient,
glidant and the like, while spraying a solvent (e.g.,
water, ethanol) containing a binder (preferably
polyvinylpyrrolidone when the active ingredient is
metformin hydrochloride) dispersed or dissolved therein,
drying the obtained granules, mixing the granules with
additives such as excipient, disintegrant, lubricant and
the like and then compression-molding the mixture.
A coated preparation can be also produced by
coating a molded product obtained by compression-molding
as mentioned above with a coating base.
As the coating base here, for example, a sugar
coating base, a water-soluble film coating base, an
enteric film coating base, a sustained-release film
coating base and the like can be mentioned.
As the sugar coating base, sucrose is used, and
one or more kinds selected from talc, precipitated
calcium carbonate, gelatin, gum arabic, pullulan,
carnauba wax and the like may be further used in
combination.
As the water-soluble film coating base, for
example, cellulose polymers such as hydroxypropyl
cellulose, hydroxypropylmethyl cellulose, hydroxyethyl
cellulose, methylhydroxyethyl cellulose etc.; synthetic
polymers such as polyvinylacetal diethylaminoacetate,
aminoalkyl methacrylate copolymer E [Eudragit E (trade
name), Rohm Pharma], polyvinylpyrrolidone etc.;
polysaccharides such as pullulan etc.; and the like can
be mentioned.

As the enteric film coating base, for example,
cellulose polymers such as hydroxypropylmethyl cellulose
phthalate, hydroxypropylmethyl cellulose acetate
succinate, carboxymethylethyl cellulose, cellulose
acetate phthalate etc.; acrylic polymers such as
methacrylic acid copolymer L [Eudragit L (trade name),
Rohm Pharma], methacrylic acid copolymer LD [Eudragit L-
30D55 (trade name), Rohm Pharma], methacrylic acid
copolymer S [Eudragit S (trade name), Rohm Pharma] etc.;
naturally occurring substances such as shellac etc.; and
the like can be mentioned.
As the sustained-release film coating base, for
example, cellulose polymers such as ethyl cellulose
etc.; acrylic polymers such as aminoalkyl methacrylate
copolymer RS [Eudragit RS (trade name), Rohm Pharma],
ethyl acrylate-methyl methacrylate copolymer suspension
[Eudragit NE (trade name), Rohm Pharma] etc.; and the
like can be mentioned.
The aforementioned coating bases may be used after
mixing with two or more kinds thereof at appropriately
ratios. For coating, coating additives may be used.
As the coating additive, for example, light
shielding agent and/or coloring agent such as titanium
oxide, talc, diiron trioxide and the like; plasticizers
such as polyethylene glycol, triethyl citrate, castor
oil, polysorbates and the like; organic acids such as
citric acid, tartaric acid, malic acid, ascorbic acid
and the like; and the like can be mentioned.
The coating is performed according to known
methods, for example, using a film coating equipment.
When a coated preparation is produced by coating
the above-mentioned molded product, the proportion of
the molded product is generally 70-99 parts by weight,
preferably 90-98 parts by weight, per 100 parts by

weight of the coated preparation.
In addition, a mark or a letter may be printed on
the solid preparation of the present invention for
identifiability, and a separating line may be made to
facilitate division.
From the aspects of preparation strength and the
like, the solid preparation of the present invention is
preferably film coated.
The solid preparation of the present invention
preferably has a hardness of 100 to 400N.
The solid preparation of the present invention
preferably has a phase wherein an insulin sensitizer and
an active ingredient (except insulin sensitizers), which
has a ratio of median size thereof to the median size of
said insulin sensitizer of 0.5 to 15 (preferably 0.5 to
10), are uniformly dispersed.
The above-mentioned preferable ratio is applied to
an insulin sensitizer and an active ingredient used as a
starting material (including a pulverized product
obtained by pulverizing, a mixed pulverized product
obtained by pulverizing together with an excipient, and
the like, during the production process of a solid
preparation) for producing the solid preparation of the
present invention. In other words, the above-mentioned
preferable ratio may have changed during the production
process of the solid preparation of the present
invention, or during the process of preserving the solid
preparation after production.
The solid preparation of the present invention
preferably shows a coefficient of variation of the
insulin sensitizer content of not more than 6%. The
coefficient of variation is preferably not more than 4%.
As used herein, the "coefficient of variation of
the insulin sensitizer content" is a percentage (%)

obtained by calculating the average value and the
standard deviation of insulin sensitizer contents of
plural solid preparations and dividing the standard
deviation by the average value. The insulin sensitizer
content of the solid preparation can be measured by
known methods (e.g., liquid chromatography).
The solid preparation of the present invention
preferably elutes out not less than 70% of the insulin
sensitizer at 30 rain after in a dissolution test
according to a Paddle Method using a hydrochloric acid-
potassium chloride buffer (pH 2.0) as a test solution at
37°C, 50 rpm.
Here, the dissolution test is performed according
to a method described in the Japanese Pharmacopoeia 14th
Edition. In addition, the "hydrochloric acid-potassium
chloride buffer (pH 2.0)" to be used as a test solution
can be prepared according to a known method. The amount
of the hydrochloric acid-potassium chloride buffer to be
used as a test solution is generally 900 mL.
The solid preparation of the present invention can
be administered orally or parenterally and safely to
mammals (e.g., mouse, rat, rabbit, cat, dog, bovine,
horse, monkey, human and the like).
The solid preparation of the present invention and
each component (e.g., insulin sensitizer such as
pioglitazone hydrochloride and the like) in the solid
preparation are useful as an agent for the prophylaxis
or treatment of, for example, diabetes (e.g., type-1
diabetes, type-2 diabetes, gestational diabetes etc.),
hyperlipidemia (e.g., hypertriglyceridemia,
hypercholesterolemia, hypo-HDL-emia, postprandial
hyperlipidemia etc.), impaired glucose tolerance [IGT
(Impaired Glucose Tolerance)], diabetic complications
[e.g., neuropathy, nephropathy, retinopathy, cataract,

macroangiopathy, osteopenia, hyperosmolar diabetic coma,
infectious disease (e.g., respiratory infection, urinary
tract infection, gastrointestinal infection, dermal soft
tissue infections, inferior limb infection etc.),
diabetic gangrene, xerostomia, hypacusis,
cerebrovascular disorder, peripheral blood circulation
disorder etc.], obesity, osteoporosis, cachexia {e.g.,
cancerous cachexia, tuberculous cachexia, diabetic
cachexia, blood disease cachexia, endocrine disease
cachexia, infectious disease cachexia or cachexia due to
acquired immunodeficiency syndrome), fatty liver,
hypertension, polycystic ovary syndrome, kidney disease
(e.g., diabetic nephropathy, glomerular nephritis,
glomerulosclerosis, nephrotic syndrome, hypertensive
nephrosclerosis, end stage kidney disease etc.),
muscular dystrophy, myocardial infarction, angina
pectoris, cerebrovascular accident (e.g., cerebral
infarction, cerebral apoplexy), insulin resistance
syndrome. Syndrome X, Dysmetabolic syndrome,
hyperinsulinemia, hyperinsulinemia-induced sensory
disorder, tumor (e.g., leukemia, breast cancer, prostate
cancer, skin cancer etc.), irritable bowel syndrome,
acute or chronic diarrhea, inflammatory diseases [e.g.,
Alzheimer's disease, chronic rheumatoid arthritis,
spondylitis deformans, osteoarthritis, lumbago, gout,
postoperative or traumatic inflammation, remission of
tumentia, neuralgia, pharyngolaryngitis, cystitis,
hepatitis (inclusive of nonalcoholic steatohepatitis),
pneumonia, pancreatitis, inflammatory bowel disease,
ulcerative colitis, etc.], visceral obesity syndrome,
arteriosclerosis (e.g., atherosclerosis etc.) and the
like.
The solid preparation of the present invention and
each component (e.g., insulin sensitizer such as

pioglitazone hydrochloride and the like) in the solid
preparation are useful for the secondary prevention of
various diseases mentioned above (e.g., secondary
prevention of cardiovascular event such as cardiac
infarction etc.) and suppression of progression (e.g.,
suppression of progression of impaired glucose tolerance
into diabetes, suppression of progression of
arteriosclerosis in diabetic patients).
The dose of the solid preparation of the present
invention only needs to be an effective amount of an
insulin sensitizer and an active ingredient (except
insulin sensitizers) contained in the solid preparation.
The effective dose of the insulin sensitizer is,
for example, generally 0.01-500 mg/day, preferably 0.1-
100 mg/day, for an adult (body weight 60 kg).
Particularly, the effective amount of pioglitazone
hydrochloride is generally 7.5-60 mg/day, preferably 15-
60 mg/day, for an adult (body weight 60 kg), when the
insulin sensitizer is pioglitazone hydrochloride.
When the insulin sensitizer is rosiglitazone
malate, the effective amount of rosiglitazone malate is
generally 1-12 mg/day, preferably 2-8 mg/day, for an
adult (body weight 60 kg).
The effective amount of the active ingredient
(except insulin sensitizers) is, for example, generally
0.01-10000 mg/day, preferably 0.1-5000 mg/day, for an
adult (body weight 60 kg) .
Particularly, the effective amount of a biguanide
(preferably metformin hydrochloride) is generally 125-
2550 mg/day, preferably 250-2550 mg/day, for an adult
(body weight 60 kg), when the active ingredient is the
biguanide (preferably metformin hydrochloride).
The frequency of the administration of the solid
preparation of the present invention to the

aforementioned mammals per day is preferably 1 or 2
times a day, more preferably once a day. Particularly,
the solid preparation of the present invention is
preferably administered once to a mammal before
breakfast.
The solid preparation of the present invention may
be used in combination with one or more pharmaceutical
agents selected from therapeutic agents for diabetes,
therapeutic agents for diabetic complications,
therapeutic agents for hyperlipidemia, antihypertensive
agents, antiobesity agents, diuretics, antithrombotic
agents and the like (hereinafter sometimes to be
abbreviated as a concomitant drug). As such concomitant
drugs, those exemplified above as the active ingredient
can be used. The time of administration of the solid
preparation of the present invention and that of the
concomitant drug are not limited, and they may be
administered simultaneously or in a staggered manner to
the administration subject. In addition, the solid
preparation of the present invention and the concomitant
drug may be administered to an administration subject as
a single preparation containing them.
The dose of the concomitant drug can be
appropriately determined based on the dose employed
clinically. In addition, the mixing ratio of the solid
preparation of the present invention and the concomitant
drug can be appropriately determined according to the
administration subject, administration route, target
disease, condition, combination, and the like. For
example, when the administration subject is a human, the
concomitant drug may be used in an amount of 0.01 to 100
parts by weight per 1 part by weight of the solid
preparation of the present invention.
Use of the concomitant drug in this way provides

superior effects such as 1) enhancing the action of the
solid preparation of the present invention or the
concomitant drug (synergistic effect on the action of
the pharmaceutical agents), 2) reducing the dose of the
solid preparation of the present invention or the
concomitant drug (effect of reducing the dose of
pharmaceutical agents as compared to a single drug
administration), 3) reducing the secondary action of the
solid preparation of the present invention or the
concomitant drug, and the like.
The present invention further provides "a
production method of a solid preparation having a phase
(part) wherein an insulin sensitizer and an active
ingredient (except insulin sensitizers) are uniformly
dispersed, which comprises fluidized bed-granulating the
insulin sensitizer and the active ingredient (except
insulin sensitizers) having a ratio of median size
thereof to the median size of said insulin sensitizer of
0.5 to 15 (preferably 0.5 to 10).
Here, the fluidized bed granulating is performed
according to a method known per se., for example, using
a fluidized granulating dryer and the like. Where
necessary, additives such as an excipient, a glidant, a
binder and the like may be added during or before
fluidized bed granulating. Alternatively, the granules
obtained by fluidized bed granulating may be mixed with
additives such as an excipient, a disintegrant, a
lubricant and the like as necessary, and compression-
molded, and the obtained molded product may be further
coated with a coating base.
As used herein, as the additive and coating base,
those similar to the aforementioned can be used. In
addition, the compression-molding and coating are
performed in the same manner as the above.

The production method of the present invention is
useful for the production of a solid preparation
containing a highly water-soluble active ingredient
(e.g., metformin hydrochloride) as a convenient
production method of a solid preparation superior in
preparation characteristics such as content uniformity
and dissolution property of the active ingredient and an
insulin sensitizer, preparation hardness and the like.
The present invention is explained in detail in
the following by referring to Examples, Reference
Examples, Comparative Example and Experimental Examples,
which are not to be construed as limitative.
In the following Examples and Comparative Example,
the median size was measured by Helos & Rodos (trade
name, manufactured by Sympatec). In the Examples,
moreover, as various additives such as magnesium
stearate and the like, the Japanese Pharmacopoeia 14th
Edition compatible products were used.
Example 1
Metformin hydrochloride (median size: 29 ^m, 267.6
g), pioglitazone hydrochloride (median size: 13 urn, 8.7
g) and cornstarch (4.2 g) were placed in a fluidized
granulating dryer (manufactured by POWREX CORPORATION,
LAB-1), granulated while spraying purified water (195 g)
containing polyvinylpyrrolidone (19.5 g) and dried to
give granules.
Microcrystalline cellulose (18.87 g),
croscarmellose sodium (16.85 g) and magnesium stearate
(1.35 g) were added to and mixed with the obtained
granules.
The obtained powder mixture was tableted using a
tableting machine (manufactured by Kikusui Seisakusho,
Ltd., Correctl2HUK)(tablet size: long diameter 13.5 mm x
short diameter 8.5 mm, compression pressure: 9.6 kN/cm2)

to give tablets weighing 630 rag per tablet.
Example 2
Metformin hydrochloride (median size: 29 µm, 2283.1
g), pioglitazone hydrochloride (median size: 13 µm, 75.5
g), Sylysia320 (trade name, Fuji Silysia Chemical Ltd.,
1.4 g), microcrystalline cellulose (85.7 g) were placed
in a fluidized granulating dryer (manufactured by POWREX
CORPORATION, FD-3SN), granulated while spraying purified
water (1507 g) containing polyvinylpyrrolidone (150.7 g)
and dried to give granules.
Microcrystalline cellulose (170 g), croscarmellose
sodium (137.8 g) and magnesium stearate (9.1 g) were
added to and mixed with the obtained granules.
The obtained powder mixture was tableted using a
tableting machine (manufactured by Kikusui Seisakusho
Ltd., Correctl2HUK)(tablet size: long diameter 13.5 mm x
short diameter 8.5 mm, compression pressure: 9.6 kN/cm2)
to give tablets weighing 638 mg per tablet.
The obtained tablets (1200 g) were cast in a film
coating apparatus (Hicoater 30, manufactured by POWREX
CORPORATION), and coating was performed by spraying a
coating solution at an entrance temperature of 80°C and
at 2.0 g/min to give film-coated tablets weighing 657 mg
per tablet. As the coating solution, a dispersion of
hydroxypropylmethyl cellulose (22.0 g), polyethylene
glycol 6000 (4.2 g), titanium oxide (4.2 g) and talc
(4.2 g) in purified water (446 g) was used.
Example 3
Metformin hydrochloride (median size: 29 µm, 2318.2
g), pioglitazone hydrochloride (median size: 13 µm, 45.1
g), Sylysia320 (trade name, Fuji Silysia Chemical Ltd.,
1.4 g) and microcrystalline cellulose (86.4 g) were
placed in a fluidized granulating dryer (manufactured by
POWREX CORPORATION, FD-3SN), granulated while spraying

purified water (1500 g) containing polyvinylpyrrolidone
(150 g) and dried to give granules.
Microcrystalline cellulose (170 g), croscarmellose
sodium (138.2 g) and magnesium stearate (9.0 g) were
added to and mixed with the obtained granules.
The obtained powder mixture was tableted using a
tableting machine (manufactured by Kikusui Seisakusho
Ltd., Correctl2HUK)(tablet size: long diameter 17.5 mm x
short diameter 9.5 mm, compression pressure: 11 kN/cm2)
to give tablets weighing 1070 mg per tablet.
The obtained tablets (1200 g) were cast in a film
coating apparatus (Hicoater 30, manufactured by POWREX
CORPORATION), and coating was performed by spraying a
coating solution at an entrance temperature of 80°C and
at 2.0 g/min to give film-coated tablets weighing 1100
mg per tablet. As the coating solution, a dispersion of
hydroxypropylmethyl cellulose (20.7 g) , polyethylene
glycol 6000 (4.0 g), titanium oxide (4.0 g) and talc
(4.0 g) in purified water (327 g) was used.
Example 4
Metformin hydrochloride (median size: 29 µm, 2325.6
g), pioglitazone hydrochloride (median size: 13 µm, 38.4
g), Sylysia320 (trade name, Fuji Silysia Chemical Ltd.,
1.4 g) and microcrystalline cellulose (88.1 g) were
placed in a fluidized granulating dryer (manufactured by
POWREX CORPORATION, FD-3SN), granulated while spraying
purified water (1491 g) containing polyvinylpyrrolidone
(149.1 g) and dried to give granules.
Microcrystalline cellulose (170 g), croscarmellose
sodium (137.1 g) and magnesium stearate (8.8 g) were
added to and mixed with the obtained granules.
The obtained powder mixture was tableted using a
tableting machine (manufactured by Kikusui Seisakusho
Ltd., Correctl2HUK)(tablet size: long diameter 20.0 mm x

short diameter 10.0 mm, compression pressure: 11 kN/cm2)
to give tablets weighing 1255 mg per tablet.
The obtained tablets (1200 g) were cast in a film
coating apparatus (Hicoater 30, manufactured by POWREX
CORPORATION), and coating was performed by spraying a
coating solution at an entrance temperature of 80°C and
at 2.0 g/min to give film-coated tablets weighing 1290
mg per tablet. As the coating solution, a dispersion of
hydroxypropylmethyl cellulose (20.8 g), polyethylene
glycol 6000 (3.9 g), titanium oxide (3.9 g) and talc
(3.9 g) in purified water (325 g) was used.
Example 5
Pioglitazone hydrochloride (median size: 13 urn)
(10000 g) and microcrystalline cellulose (2500 g) were
cast into a mixer (POWREX CORPORATION, vertical
granulator) and mixed by stirring. The obtained mixture
was pulverized in a jet mill pulverizer (NPK Co., Ltd.,
100SP) to give a pulverized product (median size 3.6 µm)
of a pioglitazone hydrochloride/microcrystalline
cellulose mixture.
Metformin hydrochloride (median size: 29 µm, 4250
g) , a pulverized product (median size 3.6 urn, 103.3 g)
of a pioglitazone hydrochloride/microcrystalline
cellulose mixture and microcrystalline cellulose (131.9
g) were cast in a fluidized granulating dryer (POWREX
CORPORATION, FD-5S), granulated while spraying purified
water (1375 g) containing polyvinylpyrrolidone (275 g),
and dried to give granules.
Microcrystalline cellulose (320 g), croscarmellose
sodium (253.4 g) and magnesium stearate (16.5 g) were
added to and mixed with the obtained granules.
The obtained powder mixture was tableted using a
tableting machine (manufactured by Kikusui Seisakusho
Ltd., Correctl2HUK)(tablet size: long diameter 17.5 mm x

short diameter 9.5 mm, compression pressure: 20
kN/punch) equipped with a tapered die to give tablets
weighing 1070 mg per tablet.
The obtained tablets (3600 g) were cast in a film
coating apparatus (DRIACOATER500, manufactured by POWREX
CORPORATION) and a coating solution was sprayed at an
entrance temperature of 80°C at 15.0 g/min to give film-
coated tablets weighing 1100 mg per tablet. As the
coating solution, a dispersion of hydroxypropylmethyl
cellulose (63.8 g) , polyethylene glycol 6000 (12.3 g) ,
titanium oxide (12.3 g) and talc (12.3 g) in purified
water (1000 g) was used.
Example 6
Pioglitazone hydrochloride (median size: 13 µm,
10000 g) and microcrystalline cellulose (2500 g) were
cast into a mixer (POWREX CORPORATION, vertical
granulator) and mixed by stirring. The obtained mixture
was pulverized in a jet mill pulverizer (NPK Co., Ltd.,
100SP) to give a pulverized product (median size 3.6 µm)
of a pioglitazone hydrochloride/microcrystalline
cellulose mixture.
Metformin hydrochloride (median size: 29 µm, 4500
g) , a pulverized product (median size 3.6 µm, 185.9 g)
of a pioglitazone hydrochloride/microcrystalline
cellulose mixture and microcrystalline cellulose (127.5
g) were cast in a fluidized granulating dryer (POWREX
CORPORATION, FD-5S), granulated while spraying purified
water (1485 g) containing polyvinylpyrrolidone (297 g),
and dried to give granules.
Microcrystalline cellulose (342 g), croscarmellose
sodium (271.5 g) and magnesium stearate (18 g) were
added to and mixed with the obtained granules.
The obtained powder mixture was tableted using a
tableting machine (manufactured by Kikusui Seisakusho

Ltd., Correctl2HUK)(tablet size: long diameter 13.5 mm x
short diameter 8.5 mm, compression pressure: 15
kN/punch) equipped with a tapered die to give tablets
weighing 638 mg per tablet.
The obtained tablets (3600 g) were cast in a film
coating apparatus (DRIACOATER500, manufactured by POWREX
CORPORATION) and a coating solution was sprayed at an
entrance temperature of 80°C at 15.0 g/min to give film-
coated tablets weighing 657 mg per tablet. As the
coating solution, a dispersion of hydroxypropylmethyl
cellulose (67.4 g), polyethylene glycol 6000 (13 g) ,
titanium oxide (13 g) and talc (13 g) in purified water
(1064 g) was used.
Reference Example 1
[Production of coating agent]
Hydroxypropylmethyl cellulose 2910 (TC-5) (350.4
g) and polyethylene glycol 6000 (72 g) were dissolved in
purified water (4320 g) . Titanium oxide (48 g) and
yellow diiron trioxide (9.6 g) were dispersed in the
obtained solution to give a coating agent.
[Production of naked tablet]
(E)-4-[4-(5-Methyl-2-phenyl-4-
oxazolylmethoxy)benzyloxyimino]-4-phenylbutyric acid
(hereinafter to be abbreviated as Compound A, 1184 g),
lactose (1991 g), cornstarch (366.3 g) and
croscarmellose sodium (233.9 g) were placed in a
fluidized bed granulator dryer (manufactured by POWREX
CORPORATION), preheated, mixed and granulated while
spraying an aqueous solution (2591 g) containing
hydroxypropyl cellulose (142.5 g) . The obtained granule
powder (3696 g) was passed through a power mill
(manufactured by Showa Chemical Machinery Engineering)
to give a sized powder. The obtained sized powder (3485

g), cornstarch (127.1 g) and magnesium stearate (18.15
g) were mixed in a tumbler mixer (manufactured by Showa
chemical machinery engineering) and the obtained mixed
powder was tableted by a tableting machine (manufactured
by Kikusui Seisakusho Ltd.) to give naked tablets.
[Production of film-coated tablet]
The aforementioned coating agent was sprayed on
the obtained 24000 naked tablets in a film coating
machine (manufactured by POWREX CORPORATION) to give
film-coated tablets (24000 tablets) containing 32.0 mg
of Compound A per tablet and having the following
formulation.
Tablet formulation (composition per tablet):
(naked tablet)
1) Compound A 32.0 mg
2) lactose 53.8 mg
3) cornstarch 13.75 mg
4) croscarmellose sodium 6.05 mg
5) hydroxypropyl cellulose 3.85 mg
6) magnesium stearate 0.55 mg
total 110.0 mg
(film components)
7) hydroxypropylmethyl cellulose 2910 2.92 mg
8) polyethylene glycol 6000 0.6 mg
9) titanium oxide 0.4 mg
10) yellow diiron trioxide 0.08 mg
total 114.0 mg
Reference Example 2
[Production of coating agent]
Hydroxypropylmethyl cellulose 2910 (TC-5) (101.9 g)
and polyethylene glycol 6000 (20.4 g) were dissolved in
purified water (1224 g). Titanium oxide (13.6 g) and
yellow diiron trioxide (0.136 g) were dispersed in the
obtained solution to give a coating agent.

[Production of naked tablet]
In the same manner as in Reference Example 1, a
mixed powder was prepared and the obtained mixed powder
was tableted by a tableting machine (Kikusui Seisakusho
Ltd.) to give naked tablets.
[Production of film-coated tablet]
The aforementioned coating agent was sprayed on
the obtained 600 naked tablets in a film coating machine
(manufactured by Freund Corporation) to give film-coated
tablets (600 tablets) containing 48.0 rag of Compound A
per tablet and having the following formulation.
Tablet formulation (composition per tablet):
(naked tablet)
1) Compound A 4 8.0 mg
2) lactose 80.7 mg
3) cornstarch 20.625 mg
4) croscarmellose sodium 9.075 mg
5) hydroxypropyl cellulose 5.775 mg
6) magnesium stearate 0.825 mg
total 165.0 mg
(film components)
7) hydroxypropylmethyl cellulose 2910 4.494 mg
8) polyethylene glycol 6000 0.9 mg
9) titanium oxide 0.6 mg
10) yellow diiron trioxide 0.006 mg
total 171.0 mg
Reference Example 3
[Production of coating agent]
Hydroxypropylmethyl cellulose 2910 (TC-5) (101.2 g)
and polyethylene glycol 6000 (20.4 g) were dissolved in
purified water (1224 g) . Titanium oxide (13.6 g) and
yellow diiron trioxide (0.816 g) were dispersed in the
obtained solution to give a coating agent.
[Production of naked tablet]

In the same manner as in Reference Example 1, a
mixed powder was prepared and the obtained mixed powder
was tableted by a tableting machine (Kikusui Seisakusho
Ltd.) to give naked tablets.
[Production of film-coated tablet]
The aforementioned coating agent was sprayed on
the obtained 320 naked tablets in a film coating machine
(manufactured by Freund Corporation) to give film-coated
tablets (320 tablets) containing 64.0 mg of Compound A
per tablet and having the following formulation,
(naked tablet)
1) Compound A 64 . 0 mg
2) lactose 107.6 mg
3) cornstarch 27.5 mg
4) croscarmellose sodium 12.1 mg
5) hydroxypropyl cellulose 7.7 mg
6) magnesium stearate 1.1 mg
total 220.0 mg
(film components)
7) hydroxypropylmethyl cellulose 2910 5.952 mg
8) polyethylene glycol 6000 1.2 mg
9) titanium oxide 0.8 mg
10) yellow diiron trioxide 0.048 mg
total 228.0 mg
Reference Example 4
[Production of coating agent]
Hydroxypropylmethyl cellulose 2910 (TC-5) (298.8 g)
and polyethylene glycol 6000 (60 g) were dissolved in
purified water (3600 g) . Titanium oxide (40 g) and
yellow diiron trioxide (1.2 g) were dispersed in the
obtained solution to give a coating agent.
[Production of naked tablet]
Compound A (1032 g) , lactose (2657 g) , cornstarch
(425.7 g) and croscarmellose sodium (260.2 g) were

placed in a fluidized bed granulator dryer (manufactured
by POWREX CORPORATION), preheated, mixed and granulated
while spraying an aqueous solution (2760 g) containing
hydroxypropyl cellulose (165.6 g). The obtained granule
powder (4277 g) was passed through a power mill
(manufactured by Showa Chemical Machinery Engineering)
to give a sized powder. The obtained sized powder (3696
g), cornstarch (134.8 g) and magnesium stearate (19.25
g) were mixed in a tumbler mixer (manufactured by Showa
Chemical Machinery Engineering) and the obtained mixed
powder was tableted by a tableting machine (Kikusui
Seisakusho Ltd.) to give naked tablets.
[Production of film-coated tablet]
The aforementioned coating agent was sprayed on
the obtained 27000 naked tablets in a film coating
machine (manufactured by POWREX CORPORATION) to give
film-coated tablets (27000 tablets) containing 24.0 mg
of Compound A per tablet and having the following
formulation.
Tablet formulation (composition per tablet):
(naked tablet)
1) Compound A 24.0 mg
2) lactose 61.8 mg
3) cornstarch 13.75 mg
4) croscarmellose sodium 6.05 mg
5) hydroxypropyl cellulose 3.85 mg
6) magnesium stearate 0.55 mg
total 110.0 mg
(film components)
7) hydroxypropylmethyl cellulose 2910 2.988 mg
8) polyethylene glycol 6000 0.6 mg
9) titanium oxide 0.4 mg
10) yellow diiron trioxide 0.012 mg
total 114.0 mg

Comparative Example 1
In the same manner as in Example 1 except that
metformin hydrochloride (median size: 29 µm) was
replaced by metformin hydrochloride (median size: 238
µm) , tablets were obtained.
Experimental Example 1
The tablets obtained in the aforementioned
Examples and Comparative Example were evaluated for
content uniformity of these drugs by determining the
coefficient of variation (%) of pioglitazone
hydrochloride and metformin hydrochloride.
To be specific, the contents of pioglitazone
hydrochloride and metformin hydrochloride in the tablets
were measured by liquid chromatography, the average
value and standard deviation of 3 tablets were
determined, after which the standard deviation was
divided by the average value and the percentage thereof
was calculated. The results are shown in Table 1.

As shown in Table 1, the coefficient of variation
of pioglitazone hydrochloride and metformin
hydrochloride in the solid preparation of the present
invention was small. In other words, the solid
preparation of the present invention showed superior

drug content uniformity.
Experimental Example 2
The tablets obtained in the aforementioned
Examples and Comparative Example were measured for the
tablet hardness in the long diameter direction using a
tablet hardness meter (manufactured by Toyama Sangyo Co.,
Ltd. ) . The results are expressed in an average of 3
tablets. The results are shown in Table 2.

As shown in Table 2, the solid preparation of the
present invention showed superior tablet hardness.
Experimental Example 3
The tablets obtained in the aforementioned
Examples were evaluated for the dissolution property of
pioglitazone hydrochloride by the Paddle Method (50 rpm)
using a hydrochloric acid-potassium chloride buffer (900
mL, 37°C, pH 2.0). The results are shown in Table 3.

As shown in Table 3, the solid preparation of the
present invention showed superior dissolution property

of pioglitazone hydrochloride.
Industrially Applicability
The solid preparation of the present invention is
useful as a therapeutic drug for diabetes and the like
and is superior in preparation characteristics such as
content uniformity and dissolution property of an
insulin sensitizer and an active ingredient (except
insulin sensitizers), preparation hardness and the like.
Moreover, the solid preparation of the present
invention can be easily produced by a convenient method.

WE CLAIM;
1. A solid preparation having a phase wherein pioglitazone or salt thereof
and a biguanide having a ratio of median size thereof to the median size
of said pioglitazone or salt thereof of 0.5 to 15 are uniformly dispersed,
wherein the pioglitazone or salt thereof has a median size of 1-25 µm and
the biguanide has a median size of 10-100 µm.
2. The solid preparation of claim 1, wherein the biguanide is metformin
hydrochloride.
3. The solid preparation of claim 1, wherein the pioglitazone or salt thereof
is pioglitazone hydrochloride.
4. The solid preparation of claim 1, wherein pioglitazone hydrochloride and
metformin hydrochloride having a ratio of median size thereof to the
median size of said pioglitazone hydrochloride of 0.5 to 15 are uniformly
dispersed.
5. The solid preparation of claim 4, which is film-coated.



A solid preparation having a phase wherein pioglitazone or salt thereof and a
biguanide having a ratio of median size thereof to the median size of said
pioglitazone or salt thereof of 0.5 to 15 are uniformly dispersed, wherein the
pioglitazone or salt thereof has a median size of 1-25 µm and the biguanide has
a median size of 10-100 µm.

Documents:

819-kolnp-2005-correspondence.pdf

819-kolnp-2005-examination report.pdf

819-kolnp-2005-form 18.pdf

819-kolnp-2005-form 3.pdf

819-kolnp-2005-form 5.pdf

819-KOLNP-2005-FORM-27-1.1.pdf

819-KOLNP-2005-FORM-27.pdf

819-kolnp-2005-gpa.pdf

819-kolnp-2005-granted-abstract.pdf

819-kolnp-2005-granted-claims.pdf

819-kolnp-2005-granted-description (complete).pdf

819-kolnp-2005-granted-form 1.pdf

819-kolnp-2005-granted-form 2.pdf

819-kolnp-2005-granted-specification.pdf

819-kolnp-2005-others.pdf

819-kolnp-2005-reply to examination report.pdf

819-kolnp-2005-translated copy of priority document.pdf


Patent Number 246255
Indian Patent Application Number 819/KOLNP/2005
PG Journal Number 08/2011
Publication Date 25-Feb-2011
Grant Date 22-Feb-2011
Date of Filing 05-May-2005
Name of Patentee TAKEDA PHARMACEUTICAL COMPANY LIMITED
Applicant Address 1-1, DOSHOMACHI 4-CHOME, CHUO-KU, OSAKA-SHI, OSAKA
Inventors:
# Inventor's Name Inventor's Address
1 KOIKE, MASAHIKO C/O TAKEDA PHARMACEUTICAL COMPANY LIMITED 17-85, JUSOHONMACHI 2-CHOME, YODOGAWA-KU., OSAKA-SHI, OSAKA 532-8686
2 KOYAMA, HIROYOSHI C/O TAKEDA PHARMACEUTICAL COMPANY LIMITED 17-85, JUSOHONMACHI 2-CHOME, YODOGAWA-KU., OSAKA-SHI, OSAKA 532-8686
3 HAMAGUCHI, NAORU C/O TAKEDA PHARMACEUTICAL COMPANY LIMITED 17-85, JUSOHONMACHI 2-CHOME, YODOGAWA-KU., OSAKA-SHI, OSAKA 532-8686
PCT International Classification Number A61K 31/155
PCT International Application Number PCT/JP2003/012781
PCT International Filing date 2003-10-06
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 294045/2005 2002-10-07 Japan