Chlorthenoxazine (likely referring to chlorzoxazone or a similar compound) is a centrally acting skeletal muscle relaxant used to relieve pain, stiffness, and discomfort associated with acute, painful musculoskeletal conditions, such as muscle strains, sprains, and spasms. It is typically prescribed in combination with rest, physical therapy, and other measures to aid in the treatment of these conditions. Chlorthenoxazine works by inhibiting multisynaptic reflexes in the reticular formation of the brain, helping to reduce muscle hyperactivity. It is not indicated as an antipyretic for fever reduction and is primarily available in oral tablet form. Use should be under medical supervision to monitor for potential side effects like drowsiness or liver issues.