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Cats + Medications & Supplements

  • 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.

  • 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.

  • Fish oil is an over-the-counter supplement, given by mouth, that is commonly used to treat a wide variety of inflammatory conditions. Give as directed by your veterinarian. Side effects are not common but may include vomiting, diarrhea, or a fishy odor. Do not use concurrently with anticoagulant medications. If a negative reaction occurs, please call your veterinary office.

  • Fleas are the most common nuisance and parasite affecting cats, and an infestation can lead to serious health problems. Flea control requires a three-pronged approach; they need to be eliminated from 1) your cat, 2) any other cats and dogs that you have, 3) your home and yard. There are many flea control products available and your veterinarian can help you determine which are safest and most effective for your pets.

  • Fludrocortisone acetate is given by mouth and is used off label to treat hypoadrenocorticism (Addison’s disease) and hyperkalemia. Give as directed by your veterinarian. Side effects are uncommon but may include vomiting. Do not use in pets that are allergic to it or in lactating pets without using a milk replacer. If a negative reaction occurs, please call your veterinary office.

  • 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.

  • Fluoxetine (brand names: Prozac®, Reconcile®) is given by mouth and is used on and off label to treat various behavioral conditions. Common side effects include sleepiness and decreased appetite. Do not use in pets with a history of seizures, that are on medications that lower the seizure threshold, that are allergic to it, taking MAOIs, younger than 6 months old, or aggressive pets. If a negative reaction occurs, please call your veterinary office.

  • Fluralaner (brand name Bravecto®) 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.

  • Fluticasone propionate (Flovent) is commonly used off label to treat asthma and other chronic tracheobronchial diseases. It is administered as an inhaled medication via an aerosol canister and a delivery device. Side effects are uncommon but include upper airway irritation or infection. This medication should not be used during an acute bronchospasm.

  • Frunevetmab (Solensia®) is a formulation of feline anti-nerve growth factor antibodies used to control osteoarthritis pain in cats. This medication is given by an injection under the skin, usually at the veterinary clinic. Side effects may include vomiting, diarrhea, appetite loss, itching, scabbing and hair loss on the head and neck, and pain at the injection site. Call your veterinary office immediately if you suspect an overdose or an adverse reaction to the medication.