Controlled-release pharmaceutical composition and method for producing the same

It is an object of the present invention, in the case of a controlled-release pharmaceutical composition, particularly a pulsed-release pharmaceutical composition, containing an acid-unstable physiologically active substance, to provide a pharmaceutical composition having little variation in dissolu...

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Bibliographic Details
Main Authors TAKASHI YOSHITAKE, MITSURU MIZUNO, KENJI MOROSHIMA, SHIGERU AOKI
Format Patent
LanguageEnglish
Published 18.09.2008
Subjects
CHEMISTRY
HETEROCYCLIC COMPOUNDS
HUMAN NECESSITIES
HYGIENE
MEDICAL OR VETERINARY SCIENCE
METALLURGY
ORGANIC CHEMISTRY
PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS ORMEDICINAL PREPARATIONS
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Summary:It is an object of the present invention, in the case of a controlled-release pharmaceutical composition, particularly a pulsed-release pharmaceutical composition, containing an acid-unstable physiologically active substance, to provide a pharmaceutical composition having little variation in dissolution lag time and high reliability of dissolution characteristics. The present invention discloses a controlled-release pharmaceutical composition comprising: 1) a core containing an acid-unstable physiologically active substance and a disintegrant; and 2) a release-controlling coating which covers the core, and which contains a water-insoluble polymer, an enteric polymer and a hydrophobic wax.
Bibliography:Application Number: AU20050225283