EP Patent

EP0546593A1 — Multi-layered compositions containing histamine or serotonin antagonists

Assigned to Glaxo Group Ltd · Expires 1993-06-16 · 33y expired

What this patent protects

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 t…

USPTO 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 H 2 -antagonists or serotonin agonists or antagonists.

Drugs covered by this patent

Patent Metadata

Patent number
EP0546593A1
Jurisdiction
EP
Classification
—
Expires
1993-06-16
Drug substance claim
No
Drug product claim
No
Assignee
Glaxo Group Ltd
Source
FDA Orange Book + USPTO grounding via Google Patents

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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