Impeding the extraction of active ingredients out of tablets

US6197314A · kind A · utility

Assignee

• WARNER-LAMBERT COMPANY LLC · US

Inventor

• Heinz Einig · Neustadt, DE

Key dates

• Filing date: Sep 17, 1998
• Grant date: Mar 6, 2001
• Expiry date: Sep 17, 2018

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61K31/137
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

Solid oral administration forms from which the active ingredients can be isolated only with difficulty are described and comprise, besides conventional ingredients, as addition a mixture of pharmacologically suitable fats or gel formers with surfactants. Addition of the mixtures impedes extraction of the active ingredients out of the administration forms.