Enteral pharmaceutical compositions

US4070494A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Friedrich Hoffmeister
• Rudolf Hiltmann
• Hartmund Wollweber · Wuppertal, DE
• Helmut Kramer · Mainz, DE

Key dates

• Filing date: Dec 15, 1975
• Grant date: Jan 24, 1978
• Expiry date: Dec 15, 1995

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61K31/60
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

Enteral pharmaceutical compositions containing medicinal agents having parenteral abuse potential are rendered resistant to aqueous extraction through the incorporation of a sufficient amount of a nontoxic, water gelable material. Attempts to extract the medicinal agent for parenteral abuse are thus inhibited or prevented since the material gels in the presence of water leaving no filterable liquid.