CYCLOBENZAPRINE+ACECLOFENAC belongs to a class of medicine known as a pain killer. It is primarily used to reduce and relieve pain due to muscle spasms (painful muscular contractions) associated with spondylitis (inflammation in spinal bones), osteoarthritis (lifelong joint pain and stiffness), rheumatoid arthritis (joint pain), gout, pinched vein, acute pain and chronic pain, muscle spasms. It relieves the pain and relaxes the muscles. Pain is a symptom triggered by the nervous system, causing uncomfortable sensations in the body. Muscle spasm is the sudden involuntary contractions of the muscle, which can be painful and uncomfortable.