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Cats + Medications & Supplements

  • Exenatide (brand names Bydureon®, Byetta®) is a glucagon-like peptide-1 (GLP-1) receptor agonist used in addition to insulin to achieve better blood sugar control and treat certain types of diabetes in cats. Its use is off label in veterinary medicine. Exenatide comes in an injectable immediate-release and extended-release forms – the forms are not interchangeable.

  • Fentanyl is an opioid medication used off-label to treat pain in cats and dogs. It is often given as an injection in hospital, but patches may be prescribed to deliver fentanyl transdermally (through the skin) for pets at home. This handout describes common side effects, risk factors, and drug interactions. If a negative reaction occurs, please call your veterinary office.

  • Fipronil with dinotefuran and pyriproxyfen, topical (brand name Catego® for cats), is a medication used to treat and control fleas, ticks, and chewing lice in cats and kittens 8 weeks of age and older and weighing at least 0.7 kg (1.5 lb). Fipronil with dinotefuran and pyriproxyfen comes in topical, spot-on forms.

  • Fipronil with etofenprox and s-methoprene, topical (brand name Frontline® Tritak for cats), is a medication used to treat and control fleas, ticks, and chewing lice in cats and kittens 12 weeks of age and older. Avoid use in rabbits and other small mammals.

  • Fipronil with etofenprox, topical (brand names Fiproguard® Max, Pronyl® OTC Max), is a medication used to treat and control fleas, ticks, and chewing lice in cats and kittens 12 weeks of age and older. Avoid use in rabbits and other small mammals.

  • Fipronil with s-methoprene and pyriproxyfen, topical (brand name Frontline® Gold), is a medication used to treat and control fleas and ticks in dogs and puppies 8 weeks of age and older, and to control fleas, ticks, and chewing lice in cats and kittens 8 weeks of age and older and weighing at least 1.36 kg (3 lb). It may be used to treat sarcoptic mange in dogs and cats, as well as chewing lice in dogs.

  • Fipronil with s-methoprene, topical (brand names Frontline® Plus, PetArmor® Pro Advanced, Fiproguard® Max, Fiprotrol® Plus, others), is a medication used to treat and control fleas, ticks, sarcoptic mange mites, and chewing lice in dogs and puppies 8 weeks of age and older, weighing more than 2.3 kg (5 lb). It is also used to treat and control fleas, ticks, and chewing lice in cats and kittens 8 weeks of age and older. It may be used off-label in other species.

  • Fluocinolone + acetonide DMSO (brand name Synotic®) is applied topically and is labeled to treat ear inflammation in dogs. It is also used off-label to treat ear infections in cats. Give as directed. Side effects are rare but may include temporary hearing loss or skin reactions. Do not use on pets allergic to corticosteroids or DMSO, on pets with a ruptured ear drum or pets that are pregnant.

  • Gemfibrozil is a medication prescribed off-label by veterinarians to treat high levels of fat (lipids) in the blood of dogs and cats when dietary modifications have not been effective. Occasionally, it is also used in birds for the same purpose. As a relatively new drug in veterinary medicine, its benefits, side effects, and adverse effects are still being determined.

  • Gentamicin + betamethasone ophthalmic is a steroid anti-inflammatory eye medication with antibiotic used for the treatment of external eye infections and inflammation of the eye in dogs. It is also sometimes used to manage pannus or pigmentary keratitis in dogs. It may be used off-label in cats and horses.