Educational Articles

Medications

  • Firocoxib is given by mouth and is used off label to treat pain and inflammation. Common side effects include mild decreased appetite or vomiting. Do not use in pets that are allergic to it or other NSAIDs, in dogs less than 12.5 lbs (5.7 kg), or in dogs younger than 7 months old. If a negative reaction occurs, please call your veterinary office.

  • 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.

  • Flaxseed oil is derived from flax plant seeds and contains high levels of alpha-linolenic acid (ALA), an omega-3 fatty acid, and is used to treat certain inflammatory conditions. Give as directed by your veterinarian. Side effects may include diarrhea, vomiting, delayed wound healing, or an oily coat and skin flakes. Serious side effects include persistent stomach upset, or pancreatitis. Flaxseed oil should not be used in pets that are allergic to it. If a negative reaction occurs, please call your veterinary office.

  • Flower essences are an over the counter supplement given by mouth or applied topically to treat stress or anxiety. Give as directed by your veterinarian. There are no known side effects. Do not use in pets that are allergic to it or that are pregnant or nursing. Flower essences should be used cautiously in debilitated pets or pets in organ failure. If a negative reaction occurs, please call your veterinary office.

  • Fluconazole is an antifungal medication used off label in cats, dogs, and small mammals to treat fungal infections, especially those in the brain and spinal cord. It is given by mouth in the form of a tablet or liquid suspension, and is also available as an injection for hospital use. Common side effects include gastrointestinal upset such as decreased appetite, vomiting, and diarrhea but liver toxicity can also occur. It should be used with caution in pets with liver or kidney disease, or pregnant or lactating pets. If a negative reaction occurs, call your veterinary office.

  • 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.

  • Flunixin meglumine is given by mouth, injection, or applied directly to the skin and is used on and off label to treat pain and inflammation in a variety of species. Give as directed by your veterinarian. Side effects include swelling at the injection site, muscle stiffness, or sweating. Do not use in pets that are allergic to it or other NSAIDs, in pets expecting to give birth within the next 2 days, or in birds. 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 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 is used to treat and control flea and tick infestations in dogs and cats. Sometimes fluralaner is used for the treatment of sarcoptic mange or demodectic mange. When fluralaner is prescribed for the treatment of mange, it is referred to as 'extra-label' or 'off label' use. The majority of pets have very few side effects from fluralaner, provided it is given according to label recommendations and at the prescribed interval. If you suspect an overdose or negative reaction to the medication, call your veterinary office immediately.