Aspirin or also known as acetylsalicylic acid (ASA) is a widely used drug as a pain reliever for minor aches and pains and to reduce fever. Aspirin is an over-the-counter analgesic. Available oral nonprescription analgesics include acetaminophen, non-steroidal anti-inflammatory drugs (NSAIDs) (ibuprofen and naproxen), and salicylates (aspirin, magnesium salicylate, and sodium salicylate).