What is cyclobenzaprine used for?

Cyclobenzaprine is a prescription muscle relaxant used for short-term relief of muscle spasm from acute, painful musculoskeletal conditions (for example, a strained back or neck, or other acute strains). It’s not for chronic muscle spasticity from neurological conditions.

Key points:
- How it’s used: typically for 2–3 weeks, as part of a plan with rest, physical therapy, and possibly NSAIDs or acetaminophen.
- Dose (adult, general): usually 5 mg taken 3 times daily, up to a maximum of about 40 mg per day.
- How it works: a centrally acting agent (acts in the brainstem) to reduce muscle spasm; it can cause drowsiness.
- Common side effects: drowsiness, dizziness, dry mouth, fatigue. Sedation risk is higher in older adults.
- Important cautions: avoid alcohol and other sedatives; don’t take with monoamine oxidase inhibitors (MAOIs) or within a certain window after stopping them; use with caution in liver disease, heart problems, or in the elderly.
- Not for: long-term use or for muscle spasticity due to CNS disease; not a substitute for physical therapy.

If you’re considering cyclobenzaprine, or have a prescription and want specifics tailored to you (dose, duration, interactions), talk with your doctor or pharmacist.