Acetaminophen with codeine (brand name Tylenol with Codeine, Tylenol #3) is a combination drug that is used for pain management in humans. Acetaminophen is a pain reliever and fever reducer. It is not often used in animals and, when done so, must only be used in dogs. It is often combined with the drug codeine which is a narcotic pain reliever. Acetaminophen/codeine comes in a variety of formulations.

Acetaminophen, also known as paracetamol, is an analgesic (pain reliever) and fever-reducing medication. It is used to treat pain and fever in dogs. It is used “off label” or “extra label” in some avian species, rabbits, miniature pigs, and some rodent species. Acetaminophen comes in capsule, tablet, or liquid suspension form. NEVER USE in cats or ferrets as it is potentially fatal at even miniscule doses.

Acepromazine is a sedative/tranquilizer used primarily in cats and dogs as a pre-medication for anesthesia or for chemical restraint. It is given by injection in the clinic or by mouth in the form of a tablet. The most common side effect is low blood pressure. Acepromazine should not be used in conjunction with certain toxicities, or in pets with heart disease or low blood pressure. It should be used cautiously in pets with mild liver or heart disease, clotting problems, or in pregnant, debilitated, or young animals. If a negative reaction occurs, call your veterinary office.