The active ingredient in Advil is ibuprofen, an NSAID (non-steroidal anti-inflammatory drug) that is a pain reliever and fever reducer. Ibuprofen is the active ingredient in a range of over-the-counter (OTC) medicines. Ibuprofen is classed as non-steroidal anti-inflammatory drug (NSAID).
Body chemicals called prostaglandins produce pain and fever. Advil is an ibuprofen-based pain reliever brand that blocks the body's production of these prostaglandins, therefore reducing pain and fever.
NSAIDs like ibuprofen are commonly used to manage mild to moderate pain (such as headaches, migraine, period pain), inflammation (redness and swelling) and fever in both adults and children.