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The prototypical analgesic used in the treatment of mild to moderate pain. It has anti-inflammatory and antipyretic properties and acts as an inhibitor of cyclooxygenase which results in the inhibition of the biosynthesis of prostaglandins. Aspirin also inhibits platelet aggregation and is used in the prevention of arterial and venous thrombosis. (From Martindale, The Extra Pharmacopoeia, 30th ed, p5)

A white powder or pellet used as a remedy for rheumatism, headache, colds, etc.

Trade name for acetyl-salicylic acid, a white powder employed in rheumatism and other affections as a substitute for salicylic acid and its salts, in doses of gr. 10-15 (0.6-1.0).

Acetylsalicylic acid. The acetic acid ester of salicylic acid, introduced as a substitute for sodium salicylate. Said to exert less unpleasant effects on the stomach than sodium salicylate.