| abstract |
The present invention relates to a new topical formulation (drop spot) to combat ectoparasites in cats and dogs, which comprises, as the active principle, Fipronil and/or the derivatives and salts thereof, as well as antioxidants and a suitable excipient. The use of an organic solvent acting as the transdermal carrier provides this product with a longer residual activity period and, consequently, higher efficacy. |