Ibuprofen is a non-steroidal anti-inflammatory drug (NSAID) used as a painkiller in the treatment of headache, menstrual pain, and painful injury to soft tissues (such as muscles and ligaments). The anti-inflammatory effect of ibuprofen helps reduce the joint pain and stiffness that occurs in types of arthritis, such as rheumatoid arthritis and osteoarthritis.

Ibuprofen may cause abdominal pain, diarrhea, nausea, heartburn, and, rarely, dizziness. It may cause peptic ulcer, but is less likely to do so than some other NSAIDS.