Controlled release azelastine-containing pharmaceutical compositions

US5271946A · kind A · utility

Assignee

• ASTA Pharma Aktiengesellschaft · DE

Inventor

• Helmut Hettche · Dietzenbach, DE

Key dates

• Filing date: Apr 10, 1992
• Grant date: Dec 21, 1993
• Expiry date: Apr 10, 2012

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61K47/585
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

Azelastine-containing pharmaceutical compositions which provide controlled release of the active substance using a sustained release component. The compositions contain azelastine or a physiologically acceptable salt of azelastine, together with 0.001 to 800 parts of sustained release component for each part by weight of azelastine (calculated as base) and the release rate of azelastine is between 0.05 and 5 mg per hour.