Ibuprofen is a  nonsteroidal anti-inflammatory drug (NSAID) that is used for treating pain, fever, and inflammation. Prescription ibuprofen is used to relieve pain, tenderness, swelling, and stiffness caused by osteoarthritis (arthritis caused by a breakdown of the lining of the joints) and rheumatoid arthritis (arthritis caused by swelling of the lining of the joints). […]