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Medications & Supplements

  • Chlorpheniramine maleate is given by mouth and is used off label in cats, dogs, horses, ferrets, and birds to treat allergic conditions or as a mild sedative. Common side effects include sleepiness, although other side effects are possible.

  • Cidofovir ophthalmic is a topical antiviral medication used to treat viral eye infections, such as feline herpesvirus-1, in cats. This medication must be compounded by a veterinarian or veterinary pharmacy before use in cats. Side effects may include a mild stinging sensation or redness of the eyes. Pregnant women should not handle this medication.

  • Cisapride is used off label and is given by mouth to treat gastrointestinal motility disorders in cats, dogs, and small mammals. Common side effects include vomiting, diarrhea, and abdominal discomfort. Do not use in pets that are allergic to it or in pets with conditions that would be made worse by increased intestinal movement. If a negative reaction occurs, please call your veterinary office.

  • Cisplatin is a chemotherapy drug used to treat various forms of cancer and solid tumors in animals. It is prescribed off-label for use in dogs, horses, birds, and reptiles. It should not be used in cats due to potentially fatal side effects. Cisplatin is administered by injection, typically IV into the vein, by trained veterinary staff.

  • Clindamycin is an antibiotic used to treat a range of bacterial infections in dogs and cats. It is often used to treat wounds, pyoderma, abscesses, bone and dental infections, and toxoplasmosis. Its use to treat certain infections, such as toxoplasmosis, is off label or extra-label. Clindamycin is available in oral liquid, tablets, and capsules. It has a very bitter taste, so you may need to disguise the medication in food. It is important to never give a cat a dry pill, if using capsules or tablets, as it can damage the esophagus, the muscular tube that delivers food from the mouth to the stomach (esophagitis). If you suspect an overdose or an adverse reaction to the medication, call your veterinary office immediately.

  • Clindamycin topical (brand names ClinzGard®, others) is an antimicrobial used to treat bacterial skin infections, acne, anal sac abscesses, and other wounds in cats and dogs. Clindamycin topical comes in variety of forms.

  • Clomipramine (brand name: Clomicalm) is given by mouth and is used on and off label to treat behavior disorders such as obsessive-compulsive disorders, anxiety, aggression, and urine marking. Common side effects include lack of appetite, vomiting, diarrhea, constipation, dry mouth, elevated liver enzymes, difficulty urinating, or tiredness. Do not use in pets that are allergic to it or other tricyclic antidepressants, in breeding males, in pets with a history of seizures, or concurrently with monoamine oxidase inhibitors such as amitraz flea collars. If a negative reaction occurs, please call your veterinary office.

  • Clotrimazole topical is an antifungal used in the treatment of surface skin infections caused by fungal organisms in cats, dogs, rabbits, birds, reptiles, and other animals. Clotrimazole topical comes in a variety of forms that may be specially compounded and/or be combined with other medications. All forms are applied topically.

  • Colloidal oatmeal topical (brand name DermAllay®, Epi-Soothe, others) is an anti-inflammatory, antipruritic (anti-itching), and emollient (softening, soothing) agent used in the treatment of surface skin disorders and skin reactions in cats and dogs. It is made from oat grains (Avena sativa). Colloidal oatmeal topical comes in spray, cream rinse, and shampoo forms.

  • Cyanocobalamin (vitamin B12 or cobalamin) is a vitamin supplement used to treat systemic deficiencies. It can be given through a subcutaneous injection or oral tablet. The injection may sting temporarily, but otherwise is very safe. If a negative reaction occurs, call your veterinary office.