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US 5,747,064 AGranted
Psoriasis treatment
AssigneePfizer Inc.
InventorsDebbie L. Burnett, Darius D. Dubash, Athanasios S. Ladas, Victor M. Wong
Life of this patent
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Abstract
The present invention is directed to a topical composition for the treatment of psoriasis. The composition comprises a film forming agent, especially vinyl acetate crotonic acid copolymer a plasticizer, an aqueous alcoholic solution and an amount of alkali effective to prevent the gellation of the film forming agent.
Claims1
A method for the treatment of psoriasis in a human in need of such treatment comprising the application to the psoriatic zone of a composition consisting essentially of:
- (a) from about 50 to about 90 weight percent alcohol in an aqueous solution,
- (b) from about 0.01 to about 0.5 weight percent alkali,
- (c) from about 5to about 25 weight percent vinyl acetate crotonic acid coplymer, and
- (d) from about 0.01 to about 0.2 weight percent plasticizer, said composition, when applied to a psoriatic zone of the skin of a human, forming an occlusive area suppressing greater than 70 percent of water transmission from the psoriatic zone.
1 more element
Dependencies are inferred from the claim text.