Ibuprofen+Chlorzoxazone is used in pain due to muscle spasm.

Ibuprofen + Chlorzoxazone is a combination of two medicines: Ibuprofen and Chlorzoxazone which relieve pain and relax the muscles. Ibuprofen is a non-steroidal anti-inflammatory drug (NSAID) which works by blocking the release of certain chemical messengers that cause pain and inflammation (redness and swelling). Chlorzoxazone is a muscle relaxant. It works by acting on the centers in the brain and spinal cord to relieve muscle stiffness or spasm and to improve pain and movement of muscles.

Most side effects do not require any medical attention and disappear as your body adjusts to the medicine. Consult your doctor if they persist or if you’re worried about them