Antipyrine

**Definition:** An analgesic and antipyretic that has been given by mouth and as ear drops. Antipyrine is often used in testing the effects of other drugs or diseases on drug-metabolizing enzymes in the liver. (From Martindale, The Extra Pharmacopoeia, 30th ed, p29)

**Tree numbers:** - D03.383.129.539.850.088

**Synonyms:** - Phenazone