Library
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Famotidine is an antacid given by mouth or into the vein and is commonly used off label to treat gastrointestinal ulcers and acid reflux. Side effects are uncommon but may include a slow heart rate, stomach upset, or dry mouth and skin. Use cautiously in pets that are geriatric or have liver, kidney, or heart disease.
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Felbamate is an anticonvulsant medication used to treat seizure disorders in dogs. It may be used when initial anticonvulsants are not effective or stop working. It is used off label (extra label) in veterinary medicine. Felbamate comes in tablet and liquid suspension forms.
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Fenbendazole (brand names Panacur®, Safe-Guard®) is a medication used to treat a variety of parasites in dogs. Its use in cats for the treatment of parasites is off label or extra label. Fenbendazole comes as oral granules or as a liquid suspension and is given by mouth. At regular doses, fenbendazole does not usually cause any side effects. Fenbendazole should not be used in puppies younger than six weeks of age or in sick animals.
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Fenofibrate is medication used to lower triglyceride levels (a type of fat or lipid) in dogs. Its use in cats and other animals has not been studied. It is used off label (extra label) in veterinary medicine. Fenofibrate comes in capsule and tablet forms.
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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 a nutritional supplement used in cats and dogs as an iron supplement, usually in cases of chronic blood loss or during epoetin or darbepoetin therapy. It is also used to treat iron deficiency anemia in cats and dogs.
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Fexofenadine is a second-generation antihistamine used to relieve allergy symptoms and histamine-mediated conditions in cats and dogs. It is used off label in veterinary medicine. Fexofenadine comes tablet and liquid forms to be given orally.
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Finasteride (brand names Proscar®, Propecia®) is a medication used in dogs to help with infertility issues caused by benign prostatic hypertrophy (an enlargement of the prostate gland caused by hormones) and to treat the general clinical signs associated with it. Finasteride may also be used for adrenal problems in ferrets.
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Fipronil is used topically to treat flea, tick, and chewing lice infestations. Side effects are uncommon but may include skin irritation at the application site. Do not use this product on pets less than 8 weeks old, geriatric pets, or sick/weak pets.
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Fipronil with cyphenothrin and s-methoprene, topical (brand name Frontline® Tritak for dogs), is a medication used to treat and control fleas, ticks, and chewing lice in dogs and puppies 12 weeks of age and older and weighing more than 1.8 kg (4 lb). It may also be used as a treatment of sarcoptic mange. Avoid use in rabbits, other small mammals, and cats.