Frontline Tri-Act is an antiparasitic used for treatment and prevention of flea and/or tick infestations when a repellent (anti-feeding) activity against phlebotomines, biting flies and/or mosquitoes is required, in dogs.0 - 40 kg (L): Fipronil 270.4 mg, Permethrin 2019.2 mg.
Frontline Tri-Act 40 - 60 kg (XL): Fipronil 405.6 mg, Permethrin 3028.8 mg.
