Charles Gerhardt a French chemist, synthesized aspirin in 1853 but its medicinal value was not fully recognized until 1899. Aspirin is a white, odourless powder with a bitter taste. It belongs to the group of compounds called salicylates. Aspirin is a relatively safe drug when taken at recommended dosage levels. However, it can irritate the lining of the stomach and cause small amounts of stomach bleeding.
Some people are allergic to aspirin and become ill if they take it.