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Abstract

Topical formulations containing one or more pharmaceutically acceptable bioadhesive film-forming agent, one or more anti-acne agent, and an aqueous solvent in the form of a solution or suspension are described herein. The formulation may further contain one or more excipients, including evaporation suppressants, humectants, or plasticizers. When the formulation is contacted with the skin of a patient, the solvent evaporates and forms a thin, transparent, and solid bioadhesive film. The bioadhesive film adheres to the skin surface for a prolonged period of time and the anti-acne agent is released into the skin over a prolonged period of time. Typically, the bioadhesive film adheres to the skin for at least 60 minutes following administration of the formulation, preferably for at least 8 hours following administration, more preferably up to 24 hours following administration. The prolonged retention of the anti-acne agent at the site increases the amount of uptake into the skin.

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First Claim