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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.

  • Fleas and ticks can be found worldwide and can live in many climate zones. Prevention is key to avoid infestations and to prevent disease.

  • Florfenicol/terbinafine/betamethasone otic (brand name Osurnia®) is a long-acting, topical ear medication used to treat the itching and inflammation associated with certain bacterial ear infections in dogs. It is labeled for use in dogs and not intended for use in cats. Florfenicol/terbinafine/betamethasone otic should only be administered by a veterinary professional.

  • Florfenicol/ terbinafine/mometasone otic (brand names: Claro®, Simplera®) is a long-acting, topical ear medication used to treat the itching and inflammation associated with certain bacterial and/or ear infections in dogs. It is not intended for use in cats. This medication is usually given by veterinary personnel as a single dose.

  • 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.

  • 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.

  • 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.

  • 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.

  • A seizure is an abnormal surge of electrical activity within the brain. Fly-biting seizures are a type of focal seizure in which a dog snaps at the air as if biting at invisible flies. The same anti-epileptic medications used for generalized seizures are typically used in managing focal seizures.

  • Folic acid is given by mouth or injection and is used to treat folic acid deficiencies due to intestinal or pancreatic disease, or due to the use of certain medications. Give as directed by your veterinarian. Side effects are not common but may include stomach upset. Do not use in pets with a known sensitivity. If a negative reaction occurs, please call your veterinary office.