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Illustrated Articles

Cats + Medications & Supplements

  • Itraconazole is given by mouth in the form of a capsule, tablet, or liquid to treat fungal infections in cats and for off-label treatment in dogs and small mammals. The most common side effects are anorexia, vomiting, liver toxicity, skin lesions, or limb and vessel swelling. It should not be used in pets with liver disease or low stomach acid production, and used with caution in pregnant, lactating, or pets with heart disease.

  • Ivermectin is most used as a heartworm preventive in dogs and cats. It is also used off label for treating a variety of internal and external parasites. Ivermectin may be combined with other deworming medications. Ivermectin is available as tablets, chewable tablets, a topical liquid (for ear mite treatments), and an injectable that your veterinarian will administer.

  • This handout outlines the use of disease-modifying osteoarthritis drugs (DMOADs) in cats, specifically the use of polysulfated glycosaminoglycans (PSGAGs). The rationale for their use, potential side effects, and treatment expectations are explained.

  • Kaolin/pectin is given by mouth and is used off label to treat diarrhea and certain toxicities. Use as directed by your veterinarian. Side effects are uncommon, but constipation is possible (rarely). Do not use in pets that are allergic to it, or to control severe diarrhea or diarrhea that is caused by an infection. Do not use the combination product that includes bismuth subsalicylate in cats. If a negative reaction occurs, please call your veterinary office.

  • Ketoconazole is an antifungal given by mouth in the form of a tablet, used off label to treat fungal infections in dogs, cats, small mammals, and reptiles. The most common side effects are vomiting, diarrhea, lack of appetite, and weight loss. Do not use in pets that are allergic to it and use extreme caution when using in cats or pregnant pets.

  • Ketoconazole otic is an antifungal used in the treatment of external ear infections (otitis externa) caused by yeast in cats, dogs, and other animals. Ketoconazole otic comes in ointment or liquid drop suspension forms that may be specially compounded and/or combined into a formulation with other medications.

  • Ketoconazole topical is an antifungal used in the treatment of skin infections caused by fungal organisms in cats, dogs, and other animals. It comes in a variety of forms that may be specially compounded and/or be combined with other medications.

  • Ketoprofen is given by mouth in the form of a capsule or tablet to treat pain and inflammation in dogs and horses. It’s use in animals is off label. Do not use this medication in pets that are allergic to it, or in pets concurrently using corticosteroids or other NSAIDs. If a negative reaction occurs, call your veterinary office.

  • Ketorolac is applied topically to the eye to treat pain and inflammation of the eye. Its use in dogs and cats is off label. Do not use this medication in pets that are allergic to it. If a negative reaction occurs, call your veterinary office.

  • L-Theanine (Anxitane®, Composure®) is a nutritional supplement used to treat anxiety and environment-induced stress in dogs and cats. It is an amino acid found in green tea that promotes relaxation without causing drowsiness. L-Theanine is not intended for use in animals with severe phobias or separation anxiety, or in animals with a known history of aggression.