It is used in medicine under the names aspirin, acetysal, aletodin, saletin, xaxa, &c. It has the same action as salicylic acid and salicylates, but is said to be much freer from objectionable secondary effects.
Salicylates are the next safest to quinine of all antipyretics, whilst being much more powerful in all febrile states except malaria.
In acute gonorrhoeal arthritis, simulating rheumatic fever, salicylates are useless.
In rheumatic hyperpyrexia, where the poison has attacked the central nervous system, salicylates almost always fail.
The acid and its salts are antipyretic and were used in Germany instead of salicylates in rheumatic fever.