Educational Articles

Horses + Medications

    • 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.

    • Phenobarbital is used off label and given by mouth or as an injection to treat seizures or to sedate your pet. Common side effects include sleepiness, increased thirst, urination, and/or appetite. Do not use this medication in pets with liver, lung, or kidney disease or those that are allergic to barbiturates. If a negative reaction occurs, please call your veterinary office.

    • Rifampin is commonly used off label to treat infections in horses, and occasionally in dogs and cats. It is usually given by mouth in the form of a capsule or compounded liquid. The most common side effects are vomiting, diarrhea, or reduced appetite. Liver dysfunction is also possible. Use with caution in pets that have pre-existing liver disease, are pregnant, are elderly, or are lactating. If a negative reaction occurs, please call your veterinary office.