Washable topical preparation for treating psoriasis

US4769390A · kind A · utility

Assignee

• Rohm GmbH Chemische Fabrik · DE

Inventors

• Wolfgang Roelz · Leimen, DE
• Josef Mueller · Großkarlbach, DE

Key dates

• Filing date: Jan 21, 1987
• Grant date: Sep 6, 1988
• Expiry date: Jan 21, 2007

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61P17/00
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

A pharmaceutical preparation for topical treatment of skin disorders, particularly psoriasis, comprising active ingredients consisting essentially of combinations of 1,8,9-anthracenetriol, and/or derivatives thereof, and urea. The subject preparation is applied in an essentially water-free excipient. The preparation includes surfactants, which are ordinarily incompatible with the active ingredients. By the use of surfactant-urea combinations, surfactants can be incorporated into a stable, lipophilic pharmaceutical preparation, whereby after use the surfactants are liberated by the action of water, to form a readily washable emulsion system. The inventive preparation is advantageously used in the "short time" method of therapy of psoriasis.