CA1336070C - Forme posologique a liberation controlee comprenant divers esters cellulosiques - Google Patents

Forme posologique a liberation controlee comprenant divers esters cellulosiques

Info

Publication number
CA1336070C
CA1336070C CA000609648A CA609648A CA1336070C CA 1336070 C CA1336070 C CA 1336070C CA 000609648 A CA000609648 A CA 000609648A CA 609648 A CA609648 A CA 609648A CA 1336070 C CA1336070 C CA 1336070C
Authority
CA
Canada
Prior art keywords
dosage form
molecular weight
average molecular
number average
hydroxypropylmethylcellulose
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.)
Expired - Fee Related
Application number
CA000609648A
Other languages
English (en)
Inventor
David Emil Edgren
Judy A. Magruder
Gurdish Kaur Bhatti
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.)
Alza Corp
Original Assignee
Alza Corp
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 US07/034,971 external-priority patent/US4786503A/en
Application filed by Alza Corp filed Critical Alza Corp
Priority to CA000609648A priority Critical patent/CA1336070C/fr
Application granted granted Critical
Publication of CA1336070C publication Critical patent/CA1336070C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00Medicinal preparations characterised by special physical form
    • A61K9/20Pills, tablets, discs, rods
    • A61K9/2004Excipients; Inactive ingredients
    • A61K9/2022Organic macromolecular compounds
    • A61K9/205Polysaccharides, e.g. alginate, gums; Cyclodextrin
    • A61K9/2054Cellulose; Cellulose derivatives, e.g. hydroxypropyl methylcellulose
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00Medicinal preparations characterised by special physical form
    • A61K9/20Pills, tablets, discs, rods
    • A61K9/2072Pills, 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
    • A61K9/2086Layered tablets, e.g. bilayer tablets; Tablets of the type inert core-active coat
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00Medicinal preparations characterised by special physical form
    • A61K9/20Pills, tablets, discs, rods
    • A61K9/2072Pills, 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
    • A61K9/2086Layered tablets, e.g. bilayer tablets; Tablets of the type inert core-active coat
    • A61K9/209Layered 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

Landscapes

  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Chemical & Material Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Medicinal Preparation (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
CA000609648A 1987-04-06 1989-08-29 Forme posologique a liberation controlee comprenant divers esters cellulosiques Expired - Fee Related CA1336070C (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA000609648A CA1336070C (fr) 1987-04-06 1989-08-29 Forme posologique a liberation controlee comprenant divers esters cellulosiques

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US07/034,971 US4786503A (en) 1987-04-06 1987-04-06 Dosage form comprising parallel lamine
US07/039,405 US4871548A (en) 1987-04-06 1987-04-17 Controlled release dosage form comprising different cellulose ethers
US07/239,231 US4946685A (en) 1987-04-06 1988-09-01 Cellulosic dosage form
CA000609648A CA1336070C (fr) 1987-04-06 1989-08-29 Forme posologique a liberation controlee comprenant divers esters cellulosiques

Publications (1)

Publication Number Publication Date
CA1336070C true CA1336070C (fr) 1995-06-27

Family

ID=39154985

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000609648A Expired - Fee Related CA1336070C (fr) 1987-04-06 1989-08-29 Forme posologique a liberation controlee comprenant divers esters cellulosiques

Country Status (1)

Country Link
CA (1) CA1336070C (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8911778B2 (en) 1997-07-30 2014-12-16 Dr. Falk Pharma Gmbh Pellet formulation for the treatment of the intestinal tract

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8911778B2 (en) 1997-07-30 2014-12-16 Dr. Falk Pharma Gmbh Pellet formulation for the treatment of the intestinal tract
US8940328B2 (en) 1997-07-30 2015-01-27 Dr. Falk Pharma Gmbh Pellet formulation for the treatment of the intestinal tract
US8956647B2 (en) 1997-07-30 2015-02-17 Dr. Falk Pharma Gmbh Pellet formulation for the treatment of the intestinal tract

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Legal Events

Date Code Title Description
MKLA Lapsed