Paracetamol Paracetamol ( INN ) (pronounced /ˌpærəˈsiːtəmɒl, ˌpærəˈsɛtəmɒl/ ) or acetaminophen ( /əˌsiːtəˈmɪnɵfɨn/   ( listen ) ) ( USAN ) is a widely used over-the-counter analgesic (pain reliever) and antipyretic (fever reducer). It is commonly used for the relief of fever , headaches , and other minor aches and pains,