This section is from the "A Handbook of Useful Drugs" book, by State Medical Examining and Licensing Boards.
The acetic acid ester of salicylic acid.
Properties : Aspirin occurs as a crystalline, odorless powder with a faintly acidulous taste. It is slightly soluble in water (1:100) and freely soluble in alcohol.
Action and Uses: Aspirin acts like salicylic acid and the salicylates, but is claimed to be less disturbing to the stomach. It is used as an antipyretic, analgesic and anti-rheumatic. It is much used for the relief of headache and other painful affections.
Dosage : 0.3 to 1 gm. or 5 to 15 grains, repeated once in 3 hours until symptoms of salicylism (ringing in the ears, etc.) are noted.
See Sodii Arsanilas.