An older name for a fever-reducing drug compound; also known as phenazone, once commonly used as an analgesic and antipyretic.
From anti- (against) + pyrin (from Greek pyr, fire, with chemical suffix -in). This term emerged in 19th-century pharmaceutical chemistry as one of the first synthetic fever-reducing drugs.
Antipyrin was a major breakthrough in the 1880s—one of the first synthetic drugs specifically designed to reduce fever, it revolutionized medicine before aspirin made it obsolete, showing how even successful drugs eventually get replaced.
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