Chlorzoxazone+Tramadol is used for pain due to muscle spasm.

Chlorzoxazone + Tramadol is a combination of two medicines: chlorzoxazone and tramadol which relieve pain and relax the muscles. Chlorzoxazone is a muscle relaxant. It works by acting on the centers in the brain and spinal cord to relieve the muscle stiffness or spasm. Tramadol an opioid analgesic (pain reliever) which decreases the perception of pain by blocking the transmission of pain signals to the brain.

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