CA2081709A1 - Controlled release pharmaceutical compositions - Google Patents

Controlled release pharmaceutical compositions

Info

Publication number
CA2081709A1
CA2081709A1 CA002081709A CA2081709A CA2081709A1 CA 2081709 A1 CA2081709 A1 CA 2081709A1 CA 002081709 A CA002081709 A CA 002081709A CA 2081709 A CA2081709 A CA 2081709A CA 2081709 A1 CA2081709 A1 CA 2081709A1
Authority
CA
Canada
Prior art keywords
controlled release
pharmaceutical compositions
release pharmaceutical
antagonists
dissolution
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002081709A
Other languages
French (fr)
Other versions
CA2081709C (en
Inventor
Yogendra Dandiker
Paul Derrick Huckle
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Glaxo Group Ltd
Original Assignee
Yogendra Dandiker
Paul Derrick Huckle
Glaxo Group Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from GB919123026A external-priority patent/GB9123026D0/en
Priority claimed from GB919123044A external-priority patent/GB9123044D0/en
Priority claimed from GB929203364A external-priority patent/GB9203364D0/en
Application filed by Yogendra Dandiker, Paul Derrick Huckle, Glaxo Group Limited filed Critical Yogendra Dandiker
Publication of CA2081709A1 publication Critical patent/CA2081709A1/en
Application granted granted Critical
Publication of CA2081709C publication Critical patent/CA2081709C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00—Medicinal preparations characterised by special physical form
    • A61K9/20—Pills, tablets, discs, rods
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00—Medicinal preparations characterised by special physical form
    • A61K9/20—Pills, tablets, discs, rods
    • A61K9/28—Dragees; Coated pills or tablets, e.g. with film or compression coating
    • A61K9/2806—Coating materials
    • A61K9/2833—Organic macromolecular compounds
    • A61K9/286—Polysaccharides, e.g. gums; Cyclodextrin
    • A61K9/2866—Cellulose; Cellulose derivatives, e.g. hydroxypropyl methylcellulose
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00—Medicinal preparations characterised by special physical form
    • A61K9/20—Pills, tablets, discs, rods
    • A61K9/2072—Pills, tablets, discs, rods characterised by shape, structure or size; Tablets with holes, special break lines or identification marks; Partially coated tablets; Disintegrating flat shaped forms
    • A61K9/2086—Layered tablets, e.g. bilayer tablets; Tablets of the type inert core-active coat
    • A61K9/209—Layered tablets, e.g. bilayer tablets; Tablets of the type inert core-active coat containing drug in at least two layers or in the core and in at least one outer layer
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00—Medicinal preparations characterised by special physical form
    • A61K9/20—Pills, tablets, discs, rods
    • A61K9/28—Dragees; Coated pills or tablets, e.g. with film or compression coating
    • A61K9/2806—Coating materials
    • A61K9/2813—Inorganic compounds
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P1/00—Drugs for disorders of the alimentary tract or the digestive system
    • A61P1/04—Drugs for disorders of the alimentary tract or the digestive system for ulcers, gastritis or reflux esophagitis, e.g. antacids, inhibitors of acid secretion, mucosal protectants
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P43/00—Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00

Abstract

This invention relates to a controlled release pharmaceutical composition comprising:

(a) an outer layer comprising a pH independent hydrophilic polymer together with one or more fillers; and (b) one or more inner layers each comprising an active ingredient;
wherein the outer layer is gradually removed by a combination of dissolution and erosion following administration and the inner layer or layers is gradually removed by a combination of dissolution and erosion or disintegrates rapidly once exposed; and processes for the preparation thereof. In particular the invention relates to pharmaceutical compositions for the controlled release of H2-antagonists or serotonin agonists or antagonists.
CA002081709A 1991-10-30 1992-10-29 Controlled release pharmaceutical compositions Expired - Lifetime CA2081709C (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
GBGB9123026.8 1991-10-30
GBGB9123044.1 1991-10-30
GB919123026A GB9123026D0 (en) 1991-10-30 1991-10-30 Compositions
GB919123044A GB9123044D0 (en) 1991-10-30 1991-10-30 Compositions
GB929203364A GB9203364D0 (en) 1992-02-18 1992-02-18 Compositions
GBGB9203364.6 1992-02-18

Publications (2)

Publication Number Publication Date
CA2081709A1 true CA2081709A1 (en) 1993-05-01
CA2081709C CA2081709C (en) 2003-09-02

Family

ID=27265908

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002081709A Expired - Lifetime CA2081709C (en) 1991-10-30 1992-10-29 Controlled release pharmaceutical compositions

Country Status (21)

Country Link
US (1) US5425950A (en)
EP (1) EP0546593B1 (en)
JP (1) JPH05194188A (en)
KR (1) KR930007439A (en)
AU (1) AU666880B2 (en)
BE (1) BE1005490A3 (en)
CA (1) CA2081709C (en)
CH (1) CH685536A5 (en)
CZ (1) CZ325792A3 (en)
DE (1) DE69222006T2 (en)
ES (1) ES2106818T3 (en)
FR (1) FR2683146B1 (en)
GB (1) GB2262445B (en)
IE (1) IE922775A1 (en)
IL (1) IL103593A0 (en)
IT (1) IT1263253B (en)
LU (1) LU88186A1 (en)
MX (1) MX9206236A (en)
NO (1) NO924183L (en)
NZ (1) NZ244921A (en)
TW (1) TW299236B (en)

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Also Published As

Publication number Publication date
FR2683146B1 (en) 1995-05-12
DE69222006T2 (en) 1998-01-22
EP0546593A1 (en) 1993-06-16
EP0546593B1 (en) 1997-09-03
NO924183D0 (en) 1992-10-29
GB2262445A (en) 1993-06-23
AU2746992A (en) 1993-05-06
CH685536A5 (en) 1995-08-15
DE69222006D1 (en) 1997-10-09
IT1263253B (en) 1996-08-05
NO924183L (en) 1993-05-03
IE922775A1 (en) 1993-05-05
ITRM920788A0 (en) 1992-10-29
GB2262445B (en) 1996-05-15
CA2081709C (en) 2003-09-02
MX9206236A (en) 1993-04-01
IL103593A0 (en) 1993-03-15
AU666880B2 (en) 1996-02-29
NZ244921A (en) 1995-04-27
LU88186A1 (en) 1993-05-17
JPH05194188A (en) 1993-08-03
US5425950A (en) 1995-06-20
BE1005490A3 (en) 1993-08-10
ITRM920788A1 (en) 1994-04-29
ES2106818T3 (en) 1997-11-16
TW299236B (en) 1997-03-01
GB9222662D0 (en) 1992-12-09
CZ325792A3 (en) 1993-10-13
FR2683146A1 (en) 1993-05-07
KR930007439A (en) 1993-05-20

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