Articles
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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.
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Ferrous sulfate is given by mouth and is used off label to treat iron-deficiency. Use as directed by your veterinarian. Common side effects include gastrointestinal upset such as discomfort, constipation, nausea, vomiting, and diarrhea. Do not use in pets that are allergic to it. If a negative reaction occurs, please call your veterinary office.
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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.
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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.
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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.
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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.
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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.
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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.
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Fluoroquinolone topical formulations are used to treat bacterial infections. They are used off label to treat external ear infections by topically applying the medication directly to the ear canal. Side effects may include increased redness or inflammation and should be discontinued and call your veterinarian if this occurs.
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Fluralaner is given by mouth or applied topically and is used to treat flea and tick infestations, and also off-label to treat certain types of mange and mites. Give as directed. Side effects are uncommon but may include stomach upset or neurologic symptoms. Do not use in pets with a history of seizures. If a negative reaction occurs, please call the veterinary office.
