Aspirin is a medicine you might take when you have a headache. You can buy aspirin at a drug store, supermarket, or convenience store.
Aspirin is an anti-inflammatory drug — it reduces pain, swelling, and fever. Some people take aspirin in very small amounts to reduce the risk of having a stroke or heart attack, and since the late 1800s people have taken it to ease the pain of head and body aches. The word aspirin, coined by a German chemist, was originally a trademarked brand name, from the Latin Spiraea, the plant from which aspirin's chemicals were originally extracted.