Flexeril (cyclobenzaprine) is a muscle relaxant used in addition to rest and physical therapy for short-term relief of muscle spasm associated with acute, painful musculoskeletal conditions. It is structurally related to the tricyclic antidepressants.
Flexeril works by blocking nerve impulses that you recognize as pain. Cyclobenzaprine is often combined with over-the-counter (OTC) pain medications like acetaminophen (Tylenol), or anti-inflammatory NSAIDs like ibuprofen (Advil, Motrin) or naproxen (Aleve). Treatment usually lasts no more than 2 to 3