Cyclobenzaprine is a muscle relaxer that is available in generic form as well as under the brand names Flexeril and Amrix. It’s considered a second-line treatment for Fibromyalgia. This drug is a derivative of tricyclic antidepressants, which are commonly prescribed for this condition, and its similar, mild effects.
Side effects:
Some side effects are serious so if you are experiencing some of these effects, please contact your doctor immediately.
- Allergic reaction (rash, hives, swelling of the face, lips, or tongue)
- Chest pain or heaviness, especially with pain spreading to the shoulder or arms)
- Rapid, pounding, or uneven heartbeat
- Sudden numbness or weakness
- Confusion or loss of coordination
- Sudden headache
- Hallucinations
- Seizures
- Nausea or vomiting
Less serious side effects:
- Dry mouth
- Blurred vision
- Sleepiness
- Loss of appetite
- Stomach pain
- Diarrhoea, constipation, or gas
Muscle Relaxer Cyclobenzaprine for Fibromyalgia Pain (verywellhealth.com)