US20160184275A2 - Pharmaceutical composition for modified use - Google Patents

Pharmaceutical composition for modified use Download PDF

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Publication number
US20160184275A2
US20160184275A2 US12/568,313 US56831309A US2016184275A2 US 20160184275 A2 US20160184275 A2 US 20160184275A2 US 56831309 A US56831309 A US 56831309A US 2016184275 A2 US2016184275 A2 US 2016184275A2
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Prior art keywords
pharmaceutical composition
weight
modified release
additive
compound
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US20100144807A1 (en
Inventor
Yuuki Takaishi
Yutaka Takahashi
Takashi Nishizato
Daisuke Murayama
Emiko Murayama
Soichiro Nakamura
Kazuhiro Sako
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Astellas Pharma Inc
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Astellas Pharma Inc
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Priority to US12/568,313 priority Critical patent/US20160184275A2/en
Assigned to ASTELLAS PHARMA INC. reassignment ASTELLAS PHARMA INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MURAYAMA, DAISUKE, MURAYAMA, EMIKO, NAKAMURA, SOICHIRO, NISHIZATO, TAKASHI, SAKO, KAZUHIRO, TAKAHASHI, YUTAKA, TAKAISHI, YUUKI
Publication of US20100144807A1 publication Critical patent/US20100144807A1/en
Publication of US20160184275A2 publication Critical patent/US20160184275A2/en
Priority to US15/432,854 priority patent/US10842780B2/en
Priority to US16/952,795 priority patent/US20210322387A1/en
Priority to US18/613,270 priority patent/US12059409B1/en
Abandoned legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/33—Heterocyclic compounds
    • A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/41—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with two or more ring hetero atoms, at least one of which being nitrogen, e.g. tetrazole
    • A61K31/425—Thiazoles
    • A61K31/426—1,3-Thiazoles
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    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
    • A61K47/30—Macromolecular organic or inorganic compounds, e.g. inorganic polyphosphates
    • A61K47/32—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. carbomers, poly(meth)acrylates, or polyvinyl pyrrolidone
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    • A61K47/30—Macromolecular organic or inorganic compounds, e.g. inorganic polyphosphates
    • A61K47/34—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polyesters, polyamino acids, polysiloxanes, polyphosphazines, copolymers of polyalkylene glycol or poloxamers
    • A—HUMAN NECESSITIES
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    • A61K47/30—Macromolecular organic or inorganic compounds, e.g. inorganic polyphosphates
    • A61K47/36—Polysaccharides; Derivatives thereof, e.g. gums, starch, alginate, dextrin, hyaluronic acid, chitosan, inulin, agar or pectin
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    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P3/00—Drugs for disorders of the metabolism
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    • A—HUMAN NECESSITIES
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    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
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    • A61P3/08—Drugs for disorders of the metabolism for glucose homeostasis
    • A—HUMAN NECESSITIES
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    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P3/00—Drugs for disorders of the metabolism
    • A61P3/08—Drugs for disorders of the metabolism for glucose homeostasis
    • A61P3/10—Drugs for disorders of the metabolism for glucose homeostasis for hyperglycaemia, e.g. antidiabetics

Definitions

  • the present invention relates to a pharmaceutical composition for modified release capable of reducing food effects, which are observed in conventional tablets, by combining an active ingredient with specific ingredients to control a releasing rate of the active ingredient.
  • the present invention relates to a pharmaceutical composition
  • a pharmaceutical composition comprising (R)-2-(2-aminothiazol-4-yl)-4′-[2-[(2-hydroxy-2-phenylethyl)amino]ethyl]acetic acid anilide or a pharmaceutically acceptable salt thereof, an additive which ensures penetration of water into the pharmaceutical composition (hereinafter sometimes referred to as a hydrophilic base), and a polymer which forms a hydrogel, in which the changes in AUC and Cmax caused by the intake of food can be decreased by controlling a releasing rate of the active ingredient.
  • the compound can be used as a therapeutic agent for overactive bladder, such as overactive bladder accompanied by prostatic hyperplasia, or overactive bladder accompanied by urinary urgency, urinary incontinence, and urinary frequency (see, for example, patent literature 2).
  • patent literature 3 does not refer to (R)-2-(2-aminothiazol-4-yl)-4′-[2-[(2-hydroxy-2-phenylethyl)amino]ethyl]acetic acid anilide, and further improvements are needed to produce a pharmaceutical composition.
  • An object of the present invention is to provide a pharmaceutical composition for modified release comprising (R)-2-(2-aminothiazol-4-yl)-4′-[2-[(2-hydroxy-2-phenylethyl)amino]ethyl]acetic acid anilide or a pharmaceutically acceptable salt thereof, in which the pharmaceutical composition has efficacy the same as or higher than those of conventional formulations and has no limitations on food intake, and a process of manufacturing the pharmaceutical composition.
  • T 1/2 The elimination half-life (T 1/2 ) of (R)-2-(2-aminothiazol-4-yl)-4′-[2-[(2-hydroxy-2-phenylethyl)amino]ethyl]acetic acid anilide is long (approximately 18 to 24 hours), and thus, a formulation thereof for modified release is not necessarily needed to maintain its blood level.
  • the present inventors conducted intensive studies to design the formulation by paying attention to the control of a release rate of the drug from a formulation to the extent that the release is not affected by food intake or the like, rather than the addition of release control.
  • the absorption rate of the drug in a fed state was calculated by a deconvolution method to predict continuous absorption for about 4 hours.
  • the present inventors considered from this result that a formulation capable of continuous drug release for 4 hours or more would be able to reduce the effects by food, because the drug release from the formulation would become the rate-limiting step for absorption.
  • the present invention is characterized by providing a pharmaceutical composition for modified release which is not affected by the effects of food intake and exhibits a decreased change in AUC or Cmax.
  • the present invention provides:
  • a pharmaceutical composition for modified release comprising (1) (R)-2-(2-aminothiazol-4-yl)-4′-[2-[(2-hydroxy-2-phenylethyl)amino]ethyl]acetic acid anilide, or a pharmaceutically acceptable salt thereof, (2) at least one additive which ensures penetration of water into the pharmaceutical composition and which has a solubility such that the volume of water required for dissolving 1 g of the additive is 10 mL or less, and (3) a hydrogel-forming polymer having an average molecular weight of approximately 100,000 or more, or a viscosity of 12 mPa ⁇ s or more at a 5% aqueous solution at 25° C.; [2] the pharmaceutical composition for modified release of [1], wherein the additive which ensures penetration of water into the pharmaceutical composition is one compound, or two or more compounds selected from the group consisting of polyethylene glycol, polyvinylpyrrolidone, D-mannitol, D-sorbitol, xylit
  • a formulation technique concerning a sustained-release pharmaceutical composition containing tamsulosin hydrochloride is disclosed (see Japanese Unexamined Patent Publication (Kokai) No. 2005-162736 and Japanese Unexamined Patent Publication (Kokai) No. 2005-162737).
  • This formulation technique is limited to tamsulosin, and applied to a formulation containing the drug at a low dose (0.4 mg per unit formulation).
  • This formulation enables to control the release of tamsulosin therefrom by being mainly composed of a sustained-release base.
  • the pharmaceutical composition contains the drug at a high dose (i.e., high content per unit formulation), and it is considered difficult to control the release rate of the drug from a formulation containing the sustained-release base at a low content, and therefore, the present invention is technically quite different from the formulation disclosed in these references.
  • a pharmaceutical composition for modified release which has no limitations on food intake and is stable (for example, reduction of changes in a sequential dissolution profile) can be provided.
  • composition for modified release in which AUC is not reduced can be provided.
  • the rate of decrease of Cmax in the fed state was 67% in comparison with that in a fasted state.
  • the rate of decrease of Cmax in the fed state was 42% in comparison with that in a fasted state, and this result showed that reduction of Cmax caused by food intake could be significantly alleviated by forming its formulation into the pharmaceutical formulation for modified release.
  • FIG. 1 is a graph showing dissolution profiles of the pharmaceutical composition for modified release prepared in Example 11, and the time courses thereof.
  • rapid release formulation means a formulation in which the dissolution rate of the drug from the formulation is 85% or more after 30 minutes from the beginning a dissolution test, which is carried out in accordance with a dissolution test (paddle method) described in the United States Pharmacopoeia under the conditions that 900 mL of an appropriate test fluid (such as a USP buffer, pH 6.8) is used and the paddle rotation speed is 100 rpm.
  • a dissolution test 900 mL of an appropriate test fluid (such as a USP buffer, pH 6.8) is used and the paddle rotation speed is 100 rpm.
  • the term means a formulation in which the dissolution rate of the drug from the formulation is 85% or more after 30 minutes from the beginning a dissolution test, which is carried out in accordance with a dissolution test, method 2 described in the Japanese Pharmacopoeia under the conditions that 900 mL of an appropriate test fluid (such as a Mc. Ilvain buffer, pH 6.8) is used and the paddle rotation speed is 50 rpm.
  • an appropriate test fluid such as a Mc. Ilvain buffer, pH 6.8
  • composition for modified release means a formulation in which the dissolution rate of the drug from the formulation is less than 85% after 30 minutes from the beginning a dissolution test carried out under the above conditions, and the drug release is controlled to the extent that the effects by food are reduced. More particularly, it is a formulation in which an additive (hydrophilic base) which ensures penetration of water into the formulation is combined with a polymer which forms a hydrogel.
  • the wording “the effects by food are reduced” as used herein means, for example, a 10% reduction, a 20% reduction in another embodiment, and a 30% reduction in still another embodiment, in comparison with Cmax of a conventional formulation.
  • the term means, for example, a 10% reduction with respect to the rates of decrease of Cmax and AUC in administration after food intake, in comparison with Cmax and AUC in administration in the fasted state, a 20% reduction in another embodiment, and a 30% reduction in still another embodiment.
  • Rd ( AUC ) [ AUC ( FS ) ⁇ AUC ( FI )] ⁇ 100/ AUC ( FS )
  • formulation in which the effects by food are reduced means a formulation in which the dissolution rate of the drug from the formulation is 75% or less after 1.5 hours and 100% or less after 4 hours from the beginning a dissolution test, which is carried out under the above conditions [in accordance with a dissolution test (paddle method) described in the United States Pharmacopoeia under the conditions that 900 mL of an appropriate test fluid (such as a USP buffer, pH 6.8) is used and the paddle rotation speed is 50 to 200 rpm].
  • the term means a formulation in which the dissolution rate of the drug from the formulation is 75% or less after 1.5 hours and 75% or more to 100% or less after 7 hours.
  • stable means that it is stable against, for example, heat, temperature, humidity, or light. More particularly, the term means that, for example, when a plastic bottle is filled with a pharmaceutical composition and sealed, and then, the bottle is preserved for three months under the conditions at 40° C. and 75% RH or at 60° C., the change in the dissolution rate at the point showing a dissolution rate of 50% is within ⁇ 5% or less. Alternatively, the term means that, for example, when a pharmaceutical composition is exposed to 1.2 million Lux ⁇ hr of light, the change in the dissolution rate at the point showing a dissolution rate of 50% is within +5% or less.
  • Compound A may be used in a free form which is not a salt, and may form a salt with an acid in other embodiments.
  • a salt include an acid addition salt with a mineral acid such as hydrochloric acid, hydrobromic acid, hydroiodic acid, sulfuric acid, nitric acid, phosphoric acid, or the like; and an acid addition salt with an organic acid such as formic acid, acetic acid, propionic acid, oxalic acid, malonic acid, succinic acid, fumaric acid, maleic acid, lactic acid, malic acid, citric acid, tartaric acid, carbonic acid, picric acid, methanesulfonic acid, ethanesulfonic acid, glutamic acid, or the like.
  • a mineral acid such as hydrochloric acid, hydrobromic acid, hydroiodic acid, sulfuric acid, nitric acid, phosphoric acid, or the like
  • an organic acid such as formic acid, acetic acid, propionic acid, o
  • the dose of compound A may be appropriately selected in accordance with symptom, age, sex, and the like of the patient to be treated.
  • the daily dose of compound A for oral administration to an adult is generally 0.01 to 100 mg/kg, which is administered once or divided into two to four doses per day.
  • the content of compound A per formulation is, for example, 1% by weight to 70% by weight, 5% by weight to 70% by weight in another embodiment, and 5% by weight to 50% by weight in still another embodiment.
  • the content of compound A per formulation is 1 mg to 500 mg, and 10 mg to 200 mg in another embodiment.
  • hydrogel-forming polymer used in the present invention can control the release rate of the drug, to the extent that the blood concentration profile of the drug is not affected by the presence or absence of food intake.
  • the molecular weight of the hydrogel-forming polymer is, for example, 100,000 or more, 100,000 to 8,000,000 in another embodiment, 100,000 to 5,000,000 in still another embodiment, and 100,000 to 2,000,000 in still another embodiment.
  • the viscosity of the hydrogel-forming polymer is, for example, 12 mPa ⁇ s or more in a 5% aqueous solution at 25° C.; 12 mPa ⁇ s or more in a 5% aqueous solution at 25° C., and 40,000 mPa ⁇ s or less in a 1% aqueous solution at 25° C.
  • the release period of time of the drug from the formulation can be arbitrarily controlled by adjusting the viscosity of the polymer which is used as the hydrogel-forming polymer.
  • the hydrogel-forming polymer used in the present invention is not particularly limited, so long as the release of the drug can be controlled to the extend that the effects of food on compound A may be reduced.
  • Examples of the hydrogel-forming polymer include polyethylene oxide, hydroxypropyl methylcellulose, hydroxypropyl cellulose, carboxymethyl cellulose sodium, hydroxyethyl cellulose, and carboxyvinyl polymers.
  • Examples of the hydrogel-forming polymer in another embodiment include polyethylene oxide, hydroxypropyl methylcellulose, and hydroxypropyl cellulose.
  • Examples of polyethylene oxide include product names, Polyox WSR-308 [average molecular weight: 8,000,000, viscosity: 10,000-15,000 mPa ⁇ s (1% aqueous solution at 25° C.)], Polyox WSR-303 [average molecular weight: 7,000,000, viscosity: 7,500-10,000 mPa ⁇ s (1% aqueous solution at 25° C.)], Polyox WSR Coagulant [average molecular weight: 5,000,000, viscosity: 5,500-7,500 mPa ⁇ s (1% aqueous solution at 25° C.)], Polyox WSR-301 [average molecular weight: 4,000,000, viscosity: 1,650-5,500 mPa ⁇ s (1% aqueous solution at 25° C.)], Polyox WSR-N-60K [average molecular weight: 2,000,000, viscosity: 2,000-4,000 mPa ⁇ s (2% aqueous solution at 25° C.)
  • HPMC hydoxypropyl methylcellulose
  • Metolose 90SH50000 viscosity in a 2% aqueous solution at 20° C.: 2,900-3,900 mPa ⁇ s
  • Metolose SB-4 product name, Shin-Etsu Chemical Co., Ltd.
  • TC-5RW product name, Shin-Etsu Chemical Co., Ltd.
  • TC-5S product name, Shin-Etsu Chemical Co., Ltd.
  • HPC hydroxypropyl cellulose
  • HPC-SSL product name, Nippon Soda Co., Ltd.
  • HPC-SL product name, Nippon Soda Co., Ltd.
  • HPC-L product name, Nippon Soda Co., Ltd.
  • HPC-M product name, Nippon Soda Co., Ltd.
  • HPC-H product name, Nippon Soda Co., Ltd.
  • methylcellulose examples include Metolose SM15 (product name, Shin-Etsu Chemical Co., Ltd.)(viscosity in a 2% aqueous solution at 20° C.: approximately 15 mPa ⁇ S), Metolose SM25 (product name, Shin-Etsu Chemical Co., Ltd.)(viscosity in a 2% aqueous solution at 20° C.: approximately 25 mPa ⁇ S), Metolose SM100 (product name, Shin-Etsu Chemical Co., Ltd.)(viscosity in a 2% aqueous solution at 20° C.: approximately 100 mPa ⁇ S), Metolose SM400 (product name, Shin-Etsu Chemical Co., Ltd.)(viscosity in a 2% aqueous solution at 20° C.: approximately 400 mPa ⁇ S), Metolose SM1500 (product name, Shin-Etsu Chemical Co., Ltd.)(
  • CMCNa carboxymethyl cellulose sodium
  • Sunrose F-30MC viscosity: 250-350 mPa ⁇ s (1% aqueous solution at 25° C.)
  • Sunrose F-150MC average molecular weight: 200,000, viscosity: 1,200-1,800 mPa ⁇ s (1% aqueous solution at 25° C.)
  • Sunrose F-600MC viscosity: 6,000-8,000 mPa ⁇ s (1% aqueous solution at 25° C.)
  • Sunrose F-1000MC average molecular weight: 420,000, viscosity: 8,000-12,000 mPa ⁇ s (the same)]
  • Sunrose F-1400MC viscosity: 12,000-15,000 mPa ⁇ s (1% aqueous solution at 25° C.)
  • Sunrose F-300MC average molecular weight: 300,000, viscosity: 2,500-3,000 mPa ⁇ s (the same)]
  • HEC hydroxyethyl cellulose
  • HEC DAICEL SE850 average molecular weight: 1,480,000, viscosity: 2,400-3,000 mPa ⁇ s (1% aqueous solution at 25° C.)
  • HEC DAICEL SE900 average molecular weight: 1,560,000, viscosity: 4,000-5,000 mPa ⁇ s (1% aqueous solution at 25° C.)](Daicel chemical Industries, Ltd.).
  • carboxyvinyl polymers examples include Carbopol 71G (viscosity: 4,000-11,000 mPa ⁇ S), Carbopol 971P (viscosity: 4,000-11,000 mPa ⁇ s), Carbopol 981 (viscosity: 4,000-10,000 mPa ⁇ s), Carbopol 941 (viscosity: 4,000-10,000 mPa ⁇ s), Carbopol 934 (viscosity: 30,500-39,400 mPa ⁇ s), and Carbopol 934P (viscosity: 29,400-39,400 mPa ⁇ S)(B.F. Goodrich Chemical).
  • Carbopol 71G viscosity: 4,000-11,000 mPa ⁇ S
  • Carbopol 971P viscosity: 4,000-11,000 mPa ⁇ s
  • Carbopol 981 viscosity: 4,000-10,000 mPa ⁇ s
  • Carbopol 941 viscosity: 4,000-10,000 m
  • hydrogel-forming polymers may be used alone, or as an appropriate combination of two or more thereof. A combination of different lots may be used.
  • the content of the hydrogel-forming polymer is not particularly limited, so long as it is an amount to the extent that the blood concentration profile of the drug is not affected by the presence or absence of food intake.
  • the content of the hydrogel-forming polymer is, for example, 1% by weight to 70% by weight with respect to the total weight of the formulation, and 3% by weight to 70% by weight in another embodiment.
  • the content of the hydrogel-forming polymer is 5% by weight to 70% by weight with respect to the total weight of the formulation, 10% by weight to 60% by weight in another embodiment, and 10% by weight to 40% by weight in still another embodiment.
  • the content of the hydrogel-forming polymer is 0.1% by weight to 1,000% by weight with respect to the weight of the drug, 1% by weight to 500% by weight in another embodiment, and 5% by weight to 300% by weight in still another embodiment.
  • a polymer of which the viscosity (before mixing) is beyond the specific range can be used as an appropriate combination with one or more other polymers, in case that the mixture obtained by mixing these plural polymers has a viscosity (as measured before the use) within the specific range.
  • the amount of water necessary to dissolve 1 g of the hydrophilic base at 20 ⁇ 5° C. is 10 mL or less, 6 mL or less in another embodiment, 5 mL or less in still another embodiment, and 4 mL or less in still another embodiment.
  • the hydrophilic base has a high solubility to water, the effect that allows water to penetrate into the formulation is high.
  • hydrophilic base examples include water-soluble polymers, such as polyethylene glycol [PEG: for example, product names PEG 400, PEG 1500, PEG 4000, PEG 6000, and PEG 20000 (NOF Corporation)], polyvinyl pyrrolidone (PVP: for example, product name PVP K30 (BASF), and the like; sugar alcohols, such as D-mannitol, D-sorbitol, xylitol, and the like; saccharides, such as lactose, sucrose, anhydrous maltose, D-fructose, dextran (for example, Dextran 40), glucose, and the like; surfactants, such as polyoxyethylene hydrogenated castor oil [HCO: for example, Cremophor RH40 (BASF), HCO-40, HCO-60 (Nikko Chemicals)], polyoxyethylene polyoxypropylene glycol [for example, Pluronic F68 (Asahi Denka and the like)], polyoxyethylene sorbitan
  • PEG, PVP, D-mannitol, D-sorbitol, xylitol, lactose, sucrose, anhydrous maltose, D-fructose, dextran, glucose, polyoxyethylene polyoxypropylene glycol, sodium chloride, magnesium chloride, citric acid, tartaric acid, glycine, ⁇ -alanine, lysine hydrochloride, or meglumine may be used.
  • PEG, PVP, D-mannitol, lactose, sucrose, sodium chloride, polyoxyethylene polyoxypropylene glycol, or the like may be used.
  • hydrophilic bases may be used alone, or as an appropriate combination of two or more thereof.
  • the content of the hydrophilic base is not particularly limited, so long as it is an amount capable of controlling the release of the drug to the extent that the release of the drug is not affected by food.
  • the content of the hydrophilic base is, for example, 5% by weight to 75% by weight, 5% by weight to 70% by weight in another embodiment, and 20% by weight to 60% by weight in still another embodiment.
  • the pharmaceutical composition for modified release of the present invention may be prepared as various dosage forms, which include, for example, formulations for oral administration such as tablets, capsules (including microcapsules), granules, and powder, and formulations for parenteral administration such as suppositories (for example, rectal suppositories or vaginal suppositories). These formulations may be safely administered orally or parenterally. Formulations for oral administration such as tablets, capsules, and granules may be selected in another embodiment.
  • the pharmaceutical composition for modified release of the present invention may be prepared by mixing the drug, the hydrogel-forming polymers, and the hydrophilic base, and forming the mixture into a predetermined shape.
  • the mixing and forming may be carried out in accordance with conventional methods widely used in the technical field for formulation.
  • a pharmaceutically acceptable carrier may be used in the mixing and/or forming, if desired.
  • compositions for modified release of the present invention further various pharmaceutical additives may be used, if desired.
  • Such pharmaceutical additives are not particularly limited, so long as they are pharmaceutically acceptable.
  • the pharmaceutical additives include various organic or inorganic carrier substances which are widely used as formulation materials, such as fillers, lubricants, binders, and disintegrating agents.
  • Other formulation additives such as preservatives, antioxidants, stabilizers, film coating agents, coloring agents, and sweeteners may be used, if desired.
  • fillers examples include lactose, sucrose, D-mannitol, D-sorbitol, starch, gelatinized starch, dextrin, crystalline cellulose, low substituted hydroxypropyl cellulose, carboxymethyl cellulose sodium, gum arabic, dextrin, pullulan, light anhydrous silicic acid, synthetic aluminum silicate, magnesium aluminate metasilicate, and the like.
  • lubricants examples include magnesium stearate, calcium stearate, talc, colloidal silica, and the like.
  • binders examples include gelatinized starch, sucrose, gelatin, gum arabic, methylcellulose, carboxymethyl cellulose, carboxymethyl cellulose sodium, crystalline cellulose, sucrose, D-mannitol, trehalose, dextrin, pullulan, hydroxypropyl cellulose, hydroxypropyl methylcellulose, polyvinylpyrrolidone, and the like.
  • disintegrating agents examples include lactose, sucrose, starch, carboxymethyl cellulose, carboxymethyl cellulose calcium, croscarmellose sodium, carboxymethyl starch sodium, light anhydrous silicic acid, low substituted hydroxypropylcellulose, and the like.
  • preservatives examples include p-hydroxybenzoate esters, chlorobutanol, benzyl alcohol, phenethyl alcohol, dehydroacetic acid, sorbic acid, and the like.
  • the antioxidants are not particularly limited, so long as it can avoid the effects of dissolution behavior.
  • examples of the antioxidants include butylated hydroxytoluene (BHT), propyl gallate (PG), butylhydroxyanisol (BHA), ascorbic acid, sodium ascorbate, erythorbic acid, sodium nitrite, sodium bisulfite, sodium pyrosulfite, citric acid, and edetate sodium; BHT, PG, and sodium ascorbate in another embodiment; and BHT in still another embodiment.
  • stabilizers examples include yellow ferric oxide, red ferric oxide, black iron oxide, and the like.
  • the film coating agents include pharmaceutically commonly-used bases, such as water-soluble polymers, plasticizers, and inorganic substances, or a combination thereof.
  • coloring agents examples include water-soluble edible tar pigments (examples: edible pigments such as food red No. 2, food red No. 3, food yellow No. 4, food yellow No. 5, food blue No. 1, and food blue No. 2), water-insoluble lake pigments (examples: aluminum salts of the above water-soluble edible tar pigments), natural pigments (examples: ⁇ -carotene, chlorophyll, and colcothar), and the like.
  • water-soluble edible tar pigments examples: edible pigments such as food red No. 2, food red No. 3, food yellow No. 4, food yellow No. 5, food blue No. 1, and food blue No. 2
  • water-insoluble lake pigments examples: aluminum salts of the above water-soluble edible tar pigments
  • natural pigments examples: ⁇ -carotene, chlorophyll, and colcothar
  • sweeteners examples include saccharin sodium, dipotassium glycyrrhizinate, aspartame, stevia, and the like.
  • These carriers or formulation additives may be used alone, or as an appropriate combination of two or more thereof.
  • the contents thereof may be used in appropriate amounts.
  • the content of the antioxidant is 0.025% by weight to 0.25% by weight with respect to the total weight of the formulation, and that of the stabilizer is 0.05% by weight to 1% by weight with respect to the total weight of the formulation.
  • the pharmaceutical composition for modified release of the present invention may be prepared by known methods per se, such as dry granulation, wet granulation, fluidized bed granulation, intermittent granulation, agitation granulation, or the like.
  • conventional crushing or pulverizing methods may be applied, for example, using an impact mill (Hosokawa Micron Corporation; Fine Impact Mill), a dry & wet mill (Powrex Corporation: Comil), or a cutting mill granulator (Dalton Corporation; Power Mill).
  • an impact mill Hosokawa Micron Corporation; Fine Impact Mill
  • a dry & wet mill Powrex Corporation: Comil
  • a cutting mill granulator Dalton Corporation; Power Mill
  • conventional pulverizing methods may be applied, for example, using an impact mill (Hosokawa Micron Corporation; Fine Impact Mill or Sample Mill) or a jet mill (Horkos Corp; Jet Mill).
  • conventional granulation methods may be used. Examples of such methods include a fluidized bed granulation method, an intermittent granulation method, an agitation granulation method, a high-speed agitation granulation method, a tumbling fluidized bed granulation method, an extrusion granulation method, a pulverization granulation method, a dry granulation method, and the like.
  • examples thereof include a fluidized bed granulation method, an intermittent granulation method, an agitation granulation method, a high-speed agitation granulation method, a tumbling fluidized bed granulation method, and a dry granulation method, and any method capable of granulating the drug may be used.
  • Examples of a granulator include a fluidized bed granulator (for example, Flow Coater; Freund Corporation, or GPCG; Glatt GmbH), a granulation and coating apparatus equipped with a horizontal rotating disc having a flat powder contact portion [for example, a centrifugal fluidizing granulator (for example, CF granulator; Freund Corporation)], a granulation and coating apparatus having a rotating disk with a flat surface placed at the bottom of a fluidized bed and having an aeration portion (for example, Spiralflow, or Flowcoater with a rotor container; Freund Corporation), and a dry granulator in which material powder is directly compressed, molded, crushed, and sieved (for example, Roller Compactor; Freund Corporation).
  • a fluidized bed granulator for example, Flow Coater; Freund Corporation, or GPCG; Glatt GmbH
  • a granulation and coating apparatus equipped with a horizontal rotating disc having a flat powder contact portion for example, a centri
  • the drug, the hydrogel-forming polymer, the hydrophilic base, and additives such as a filler may be compression-molded using a dry granulator, and then, may be crushed and sieved to obtain granulated products having a desired size.
  • the wet granulation for example, while the drug, the hydrogel-forming polymer, the hydrophilic base, and additives such as a filler is fluidized, an appropriate amount of water or a liquid containing the hydrophilic base and the binder may be sprayed.
  • the liquid containing the hydrophilic base may be prepared by dissolving or dispersing the essential component in a solvent such as water, ethanol, methanol, or the like. These solvents may be used as an appropriate mixture thereof.
  • the amount of water used in the granulation is not particularly limited, so long as the binder or formulation additives may be uniformly dissolved and/or suspended (dispersed) in the water.
  • the amount of water is not particularly limited, so long as the hydrogel-forming polymer can be granulated.
  • the amount of water to the hydrogel-forming polymer is generally 10% by weight or less, 8% by weight or less in another embodiment, and 5% by weight or less in still another embodiment.
  • a method of adding water in the granulation is not particularly limited, so long as a nonuniform mixture consisting of untreated powder and aggregates, which are generally powdery, is not generated. Examples thereof include a continuous spray method in which water is continuously added, an intermittent spray method in which a dry step (and a shaking step, if desired) is carried out during the granulation step, and the like.
  • the addition rate of water in the granulation is not particularly limited, so long as a nonuniform mixture consisting of untreated powder and aggregates, which are generally powdery, is not generated.
  • the addition rate of water to the hydrogel-forming polymer is generally 0.1% by weight/min. to 1% by weight/min., 0.2% by weight/min. to 0.8% by weight/min. in another embodiment, and 0.4% by weight/min. to 0.6% by weight/min. in still another embodiment.
  • the temperature of the powder in the granulation is not particularly limited, so long as it does not induce thermal denaturation of the hydrogel-forming polymer.
  • the temperature is, for example, 20° C. to the melting point (62° C. to 67° C.) of the hydrogel-forming polymer, 20° C. to 50° C. in another embodiment, 20° C. to 35° C. in still another embodiment, and 25° C. to 30° C. in still another embodiment.
  • the concentration of the binder liquid as a solid content which may be used in the granulation is, for example, 1% to 20% as a formulation amount.
  • the binder is not particularly limited, so long as it is pharmaceutically acceptable.
  • the binder may be added in the solid form to a granulator, and then, water may be sprayed as the binder liquid.
  • the binder may be dissolved in water, and then, the resulting binder liquid may be sprayed.
  • An appropriate spray rate of the binder liquid varies according to a production method to be applied or its production scale.
  • the spray rate is 2 g/min. to 20 g/min., and 5 g/min. to 15 g/min. in another embodiment.
  • An appropriate temperature of the product in the granulation is 15° C. to 50° C., and 15° C. to 40° C. in another embodiment.
  • the resulting granulated products may be, for example, dried or heated.
  • an apparatus and a method are not particularly limited, so long as the granulated products can be dried.
  • an apparatus for drying include a fluidized bed granulator (for example, Flow Coater; Freund Corporation, or GPCG; Glatt GmbH), a granulation and coating apparatus equipped with a horizontal rotating disc having a flat powder contact portion [for example, a centrifugal fluidizing granulator (for example, CF granulator; Freund Corporation)], a granulation and coating apparatus having a rotating disk with a flat surface placed at the bottom of a fluidized bed and having an aeration portion (for example, Spiralflow, or Flowcoater with a rotor container; Freund Corporation), and the like.
  • a fluidized bed granulator for example, Flow Coater; Freund Corporation, or GPCG; Glatt GmbH
  • a granulation and coating apparatus equipped with a horizontal rotating disc having a flat powder contact portion for example, a centrifugal fluidizing granulator (for
  • the conditions for drying are not particularly limited, so long as the granulated products may be generally dried in the fluidized bed.
  • the drying of the granulated products will be almost completed, for example, under the conditions in which the dry inlet air temperature is 50° C. and the drying is carried out until the temperature of the granulated products becomes 40° C. and, in another embodiment, under the conditions in which the dry inlet air temperature is 40° C. and the drying is carried out until the temperature of the granulated products becomes 30° C.
  • forced-air drying or drying under reduced pressure may be used.
  • an anti-oxidant may be added.
  • the granulated products may be sieved.
  • an apparatus and a method are not particularly limited, so long as the granulated products can be sieved.
  • Examples of an apparatus for sieving include a screen, a dry & wet mill (Powrex Corporation: Comil), a cutting mill granulator (Dalton Corporation; Power Mill), and the like.
  • the conditions for sieving are not particularly limited, so long as the granulated products may be generally sieved to obtain particles having a desired size.
  • an anti-oxidant may be added.
  • Examples of tabletting include a direct tabletting method in which the drug, the hydrophilic base, and the hydrogel-forming polymer are mixed with an appropriate additive(s), and the mixture is compression-molded to obtain tablets; a method in which a composition obtained by a wet granulation (the granulation is carried out by spraying a mixture of the drug, the hydrophilic base, the hydrogel-forming polymer, and additives with a binder liquid) or a melting granulation (the granulation is carried out by heating a mixture of the drug, the hydrophilic base, the hydrogel-forming polymer, and an appropriate low-melting substance) is formed into tablets; and the like.
  • a direct tabletting method in which the drug, the hydrophilic base, and the hydrogel-forming polymer are mixed with an appropriate additive(s), and the mixture is compression-molded to obtain tablets
  • a method in which a composition obtained by a wet granulation the granulation is carried out by spraying a mixture of the drug, the hydrophilic base, the
  • a rotary tabletting machine, a single punch tabletting machine, and the like may be used as a tabletting machine.
  • a method as well as an apparatus is not particularly limited, so long as a compression-molded product (preferably tablets) can be pharmaceutically produced.
  • the obtained tablets may be dried.
  • the initial water content of the tablet is, for example, 2% by weight/tablet or less, 1.5% by weight/tablet or less in another embodiment, and 0.9% by weight/tablet or less in still another embodiment.
  • the obtained tablets may be film coated using a pan coating machine at an amount of 1% by weight to 5% by weight per tablet.
  • Example 7 The tablets obtained in Example 7 were coated with a film coating agent [Colorcon; Opadry (containing yellow ferric oxide as a stabilizer); The same agent was used in the following Examples, unless otherwise specified.] dispersed into water to obtain a pharmaceutical composition for modified release (tablets) of the present invention.
  • a film coating agent [Colorcon; Opadry (containing yellow ferric oxide as a stabilizer); The same agent was used in the following Examples, unless otherwise specified.] dispersed into water to obtain a pharmaceutical composition for modified release (tablets) of the present invention.
  • the resulting pharmaceutical composition for modified release (granules) of the present invention was sieved and mixed with 4 g of finely ground BHT and 30 g of magnesium stearate, and the mixture was formed into tablets using a rotary tabletting machine to obtain a pharmaceutical composition for modified release (tablets) of the present invention having a tablet weight of 300 mg.
  • the obtained tablets were spray-coated with an aqueous dispersion of the film coating agent using HiCoater to obtain a pharmaceutical composition for modified release (tablets) of the present invention having a tablet weight of 309 mg.
  • a fluidized bed granulating apparatus GPCG-5 1500 g of de-lumped compound A, 1050 g of polyethylene oxide, 1764 g of polyethylene glycol, and 135 g of hydroxypropyl cellulose (HPC-SL) were loaded, and granulated with purified water to obtain a pharmaceutical composition for modified release (granules) of the present invention.
  • the resulting pharmaceutical composition for modified release (granules) of the present invention was sieved and mixed with 4 g of finely ground BHT and 30 g of magnesium stearate, and the mixture was formed into tablets using a rotary tabletting machine to obtain a pharmaceutical composition for modified release (tablets) of the present invention having a tablet weight of 300 mg.
  • the obtained tablets were spray-coated with an aqueous dispersion of the film coating agent using HiCoater to obtain a pharmaceutical composition for modified release (tablets) of the present invention having a tablet weight of 309 mg.
  • a pharmaceutical composition for modified release (granules) of the present invention 400 g of de-lumped compound A, 1120 g of polyethylene oxide, and 2313.6 g of polyethylene glycol were loaded, and granulated with 1200 g of a 10% by weight aqueous solution of hydroxypropyl cellulose to obtain a pharmaceutical composition for modified release (granules) of the present invention.
  • the resulting pharmaceutical composition for modified release (granules) of the present invention was sieved and mixed with 6.4 g of finely ground BHT and 40 g of magnesium stearate, and the mixture was formed into tablets using a rotary tabletting machine to obtain a pharmaceutical composition for modified release (tablets) of the present invention having a tablet weight of 250 mg.
  • the obtained tablets were spray-coated with an aqueous dispersion of the film coating agent (containing yellow ferric oxide and red ferric oxide as stabilizers) using HiCoater to obtain a pharmaceutical composition for modified release (tablets) of the present invention having a tablet weight of 257.5 mg.
  • the film coating agent containing yellow ferric oxide and red ferric oxide as stabilizers
  • HiCoater to obtain a pharmaceutical composition for modified release (tablets) of the present invention having a tablet weight of 257.5 mg.
  • the pharmaceutical compositions prepared in Examples 2, 8, and 9 were subjected to a dissolution test carried out in accordance with a USP dissolution test (paddle method).
  • a test fluid 900 mL of a phosphate buffer (pH 6.8) was used.
  • the pharmaceutical composition prepared in Comparative Example 1 was tested in accordance with a dissolution test, method 2 described in the Japanese Pharmacopoeia.
  • 900 mL of a Mc. Ilvain buffer (pH 6.8) was used, and the paddle rotation speed was 50 rpm.
  • Example 9 Example 1 0.5 hr. — — 95% 1.5 hr. 35% 39% 32% — 2.5 hr. 57% 61% 54% — 4.5 hr. 93% 95% 92% —
  • Plastic bottles were filled with the pharmaceutical composition for modified release prepared in Example 11, and sealed. These bottles were preserved under the conditions at 40° C. and 75% RH or at 60° C. for 3 months. After the preservation, each pharmaceutical composition was subjected to a dissolution test carried out in accordance with a USP dissolution test (paddle method). As a test fluid, 900 mL of a phosphate buffer (pH 6.8) was used. The results are shown in FIG. 1 . The acceleration of a dissolution rate was not observed after the preservation for 3 months under the conditions at 40° C. and 75% RH or at 60° C., and the results were indicative that the pharmaceutical composition was stable.
  • the pharmaceutical compositions for modified release prepared in Examples 8 and 9 were packed with aluminum/aluminum blister, and preserved under the conditions at 40° C. and 75% RH for 6 months. After the preservation, each pharmaceutical composition was subjected to a dissolution test carried out in accordance with a USP dissolution test (paddle method). As a test fluid, 900 mL of a phosphate buffer (pH 6.8) was used. As a result, changes in the dissolution rate at the point showing a dissolution rate of approximately 50% were 2% and 3%, with respect to the pharmaceutical compositions prepared in Examples 8 and 9, respectively, and the results were indicative that the pharmaceutical compositions were stable.
  • the pharmaceutical composition for modified release prepared in Example 17 was exposed to 1.2 million Lux ⁇ hr of light. After the exposure, the pharmaceutical composition was subjected to a dissolution test carried out in accordance with a USP dissolution test (paddle method). As a test fluid, 900 mL of a phosphate buffer (pH 6.8) was used. As a result, the change in the dissolution rate at the point showing a dissolution rate of approximately 50% was less than 1%, and the result was indicative that the pharmaceutical composition was stable.
  • Example 8 The pharmaceutical composition for modified release prepared in Example 8, which contained the equivalent corresponding to 200 mg of compound A, was administered to healthy persons in a fasted state or after 30 minutes from the intake of food, and the plasma levels of the drug were measured.
  • the rate of decrease of Cmax in the fed state was 67%, in comparison with that in a fasted state, and the rate of decrease of AUC was 47% (Cmax in the fasted state was approximately three times higher than that in the fed state).
  • the rate of decrease of Cmax in free-feeding was 42%, in comparison with that in a fasted state, and the rate of decrease of AUC was 25%.
  • a pharmaceutical composition for modified release in which the changes in AUC and Cmax caused by food intake can be decreased by controlling a releasing rate of the active ingredient can be provided.

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