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Horses

  • Ammonium chloride is used off label and given by mouth to treat metabolic alkalosis, struvite stones, and certain toxicities occasionally in small animals and more often in large animals. The most common side effects include pain at the injection site or stomach upset if given by mouth. Do not use in pets with severe liver, kidney, heart, or lung disease. If a negative reaction occurs, please call your veterinary office.

  • 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.

  • Bethanechol chloride is given by mouth or injection and is used off label to increase urinary or intestinal movement/activity. Give this medication as directed by your veterinarian. Common side effects include vomiting, diarrhea, drooling, and lack of appetite. Do not use in pets that are allergic to it, or have urinary obstruction, stomach ulcers, gastrointestinal obstructions, intestinal inflammation, or recent intestinal, stomach, or bladder surgery. If a negative reaction occurs, please call your veterinary office.

  • Bismuth compounds are given by mouth and are used on and off label to treat diarrhea and upset stomach. Give as directed by your veterinarian. The most common side effects include discolored stools and constipation. Do not use in pets that are allergic to it or other NSAIDs, or in pets that have a stomach or intestinal ulcer. If a negative reaction occurs, please call your veterinary office.

  • Buprenorphine is used on and off label and is given by mouth into the cheek or by injection to treat pain or as a preanesthetic. The most common side effect is sleepiness. Do not use in pets that are allergic to it or other opioids, or in pets being treated with amitraz. If a negative reaction occurs, please call your veterinary office.

  • Carbamazepine is given my mouth and is used off label in dogs, cats, and horses to treat seizures, pain, and behavior disorders. Common side effects in animals are unknown, but may include dizziness, sleepiness, nausea, and vomiting. Do not use in pets that have recently used amitraz, are pregnant, or have bone marrow disease. If a negative reaction occurs, call your veterinary office.

  • Carprofen is a nonsteroidal anti-inflammatory drug (NSAID) used on and off label. It is given by mouth in the form of a tablet to treat pain and inflammation. The most common side effects include vomiting, diarrhea, and decreased appetite. Do not use this medication in pets with bleeding disorders, in pets that are allergic to it or other NSAIDs in the same class, or in pets concurrently using corticosteroids or other NSAIDs. If a negative reaction occurs, call your veterinary office.

  • Chlorambucil is given by mouth and is used off label to treat certain types of cancer and autoimmune diseases. Common side effects include fur loss and changes in hair coat, as well as gastrointestinal upset. Do not use in pets that are allergic to it or other alkylating medications, that have bone marrow disease, have an active infection, or that are pregnant or lactating. If a negative reaction occurs, please call your veterinary office.

  • Chlorhexidine/hydrocortisone/trizEDTA topical (TrizCHLOR® 4HC) is a shampoo and spray conditioner used topically in cats, dogs, and horses to support animals with conditions such as superficial, itchy, bacterial and fungal skin infections (pyoderma); acute moist dermatitis (hotspots); and pododermatitis (skin infections of the foot).

  • Chlorpheniramine maleate is given by mouth and is used off label to treat allergic conditions or as a mild sedative. Common side effects include sleepiness, although other side effects are possible. Do not use in pets that are allergic to it or other similar antihistamines, or pets that are undergoing allergy testing within 2 weeks. If a negative reaction occurs, please call your veterinary office.