Is cyclobenzaprine a muscle relaxer?

Yes—cyclobenzaprine is a centrally‑acting skeletal muscle relaxant. It’s commonly prescribed to relieve muscle spasms and spasticity associated with acute musculoskeletal injuries or conditions such as strains, sprains, or back pain. The drug works by acting on the brain and spinal cord to inhibit reflex activity and reduce muscle tone, rather than directly relaxing muscle fibers themselves.