If you are familiar with Frontline Plus, 2 active ingredients in it are fipronil and (S)-methoprene. You see the same ingredients here with Frontline Gold with an added IGR (Insect Growth Regulator) pyriproxyfen. So one would see this as Frontline Plus and extra egg killing ingredients. This is what the veterinary clinics sell today.

FRONTLINE Gold is the latest and one of the most effective innovations in flea and tick protection. In addition to having fipronil and (S)-methoprene, it also contains a powerful new third ingredient: pyriproxyfen which helps to kill the next generation of flea eggs and larvae before they can develop into adult fleas. By effectively stopping the development of new fleas, it completely breaks the flea life cycle and keeps your dog free of flea and ticks for one whole month. Once it is applied on the skin of your dog, it slowly seeps into the hair follicles and oil glands where the fleas and ticks live and starts action immediately. Frontline Gold is waterproof and stays effective even after bathing and swimming. Do not touch or let your dog lick the treated area until it is completely dry.

Regular use of FRONTLINE Gold helps prevent new flea and tick infestations.

Frontline^® Gold for Dogs

If you are familiar with Frontline Plus, 2 active ingredients in it are fipronil and (S)-methoprene. You see the same ingredients here with Frontline Gold with an added IGR (Insect Growth Regulator) pyriproxyfen. So one would see this as Frontline Plus and extra egg killing ingredients. This is what the veterinary clinics sell today.

FRONTLINE Gold has a triple action formula. Its 3 secret weapons: fipronil and (S)-methoprene and pyriproxyfen make it relentless at killing fleas, flea eggs and larvae, as well as ticks. And the protection doesn’t quit all month.