EP1454634A1 — Preparation compositions containing acid-unstable physiologically acitve compounds and process for producing the same
Assigned to Eisai R&D Management Co Ltd · Expires 2004-09-08 · 22y expired
What this patent protects
It is intended to disclose preparation composition which enable convenient production of sustained-release preparation composition containing acid-unstable physiologically active compound and have the desired sustained-release properties. Namely, preparation composition comprisin…
USPTO Abstract
It is intended to disclose preparation composition which enable convenient production of sustained-release preparation composition containing acid-unstable physiologically active compound and have the desired sustained-release properties. Namely, preparation composition comprising a core containing an acid-unstable physiologically active compound and a coating with which the core is coated and which contains a mixture of a water-insoluble polymer and an enteric polymer. The preparation composition according to the present invention makes it possible to maintain an effective concentration in blood of the physiologically active compound over a long time, thereby improving its therapeutic effect. Moreover, the composition according to the present invention remains stable over prolonged storage.
Drugs covered by this patent
Bibliographic data sourced from FDA Orange Book + USPTO public records. Plain-English summary generated by AI grounded in source text. Patent term extensions (PTR, SPC, pediatric) may shift the effective expiry. Not legal advice.
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