Topical formulation consisting essentially of fipronil and optionally a second active ingredient, and propylene carbonate

摘要

Disclosed is a local topical formulation consisting essentially of fipronil (typically at a concentration of about 10% (w/v)) and optionally a second active ingredient (such as a macrocyclic lactone), and a solvent which is propylene carbonate, for the control of an ectoparasite (such as a flea, tick, fly or louse) on a domestic animal (such as a canine or feline).