What does cyclobenzaprine do?

Cyclobenzaprine is used to treat muscle spasms caused by musculoskeletal conditions. These are muscle spasms related to problems from the muscles and bones — not the brain or spine. These types of muscle spasms can be painful. But the pain is usually acute (short-term), not chronic. Because the pain is usually not chronic, the FDA only approved cyclobenzaprine use for 2 to 3 weeks at a time.