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Cats + Medications & Supplements

  • Ampicillin is an antibacterial medication given by injection or by mouth and is used on or off label to treat certain infections. Side effects include allergic reactions or gastrointestinal upset, and neurological signs when given in high doses. Ampicillin use is contraindicated in pets allergic to penicillins and in rabbits, guinea pigs, chinchillas, or hamsters. If a negative reaction occurs, please call your veterinary office.

  • Antioxidants are given by mouth and are over the counter supplements used to treat side effects from inflammation. Give as directed by your veterinarian. Side effects are uncommon but may include mild stomach upset. Use antioxidants cautiously in pregnant pets. If a negative reaction occurs, please call your veterinary office.

  • Topical ear medications are necessary for the treatment of most ear conditions in cats. This article provides step-by-step instructions on how to apply ear medications along with precautions. Tips are also given to reduce your cat’s anxiety with ear treatment.

  • Aspirin is given by mouth in the form of a tablet and is primarily used off label as an anti-clotting medication. It also acts as an anti-inflammatory, pain control, and fever-reducing medication. Do not use aspirin in pets that have bleeding ulcers, bleeding disorders, asthma, pregnancy, or kidney failure. Aspirin should be used very cautiously in cats.

  • Atenolol is used off label and given by mouth to treat certain heart conditions in dogs, cats, and ferrets. Common side effects include tiredness and stomach upset. Contraindications include hypersensitivity to beta-blockers, heart failure, heart block, low heart rate, or certain lung disease. If a negative reaction occurs, please call your veterinary office.

  • Atopivet® topical products are formulated to help maintain a healthy skin barrier and support skin health in cats and dogs. These skin care products are available over-the-counter in the forms of a mousse, spot-on, and skin-care collar.

  • Atovaquone is given by mouth and is used off-label to treat protozoal infections. Give as directed. Side effects are uncommon but may include stomach upset or skin rash. Do not use in pets that are pregnant. If a negative reaction occurs, contact your veterinarian as soon as possible.

  • Atropine ophthalmic (brand name Isopto Atropine) is an eye medication used to dilate (enlarge) the pupil. It is used off label (extra label) only, in all veterinary species of animals. Atropine ophthalmic comes in a 1% drop, solution, or ointment form, which is placed directly into the eye.

  • Avenanthramides with ceramides and chlorhexidine (brand name CeraSoothe CHX®) is an antiseptic, antifungal, and skin nourishing agent used in the treatment of surface skin infections and skin reactions in cats and dogs. It may be used “off label” or “extra label” in other animals and to treat other conditions. Avenanthramides with ceramides and chlorhexidine comes in mousse and shampoo forms.

  • Azathioprine is an immune suppressing medication given by mouth or as an injection and is mainly used off label to treat immune-mediated diseases in dogs. Common side effects include gastrointestinal upset and bone marrow suppression. This medication should not be used in pets that are allergic to azathioprine or are pregnant. It should be used with caution in pets with liver or kidney disease. If a negative reaction occurs, please call your veterinary office.