Posted on Feb 23, 2009

Examples Generic Name Brand Name carisoprodol Soma cyclobenzaprine hydrochloride Flexeril diazepam Valium metaxalone Skelaxin methocarbamol Robaxin How It Works Muscle relaxant medications affect the communication between the brain and the spinal cord (central nervous system). They act as sedatives, which most likely causes their muscle-relaxing effects. Why It Is Used Muscle relaxants may be helpful when severe muscle spasms follow the beginning of neck pain. How Well It Works Muscle relaxants are commonly used to treat muscle spasms in neck pain. But there is little research on their use for neck pain. Muscle relaxants do work for some people with neck pain. Studies of people with back and neck pain found that cyclobenzaprine (Flexeril) was better for pain than diazepam (Valium) or nothing. 1 Side Effects Side effects include: Possible addiction or dependence. Drowsiness. Dry mouth. Urinary retention. These medicines are best taken at bedtime. If you use one during waking hours, strictly avoid driving, operating machinery, or doing similar activities that could be dangerous to you or others if you become drowsy. Check with your doctor immediately if any of the following side effects occur: Incidence not known Black, tarry stools Chest pain Chills Cold sweats Confusion Convulsions Cough Dizziness, faintness, or lightheadedness when getting up from a lying or sitting position suddenly Fast, pounding, or irregular heartbeat or pulse Fever Loss of bladder control Muscle spasm or jerking of all extremities Painful or difficult urination Shortness of breath Sore throat Sores, ulcers, or white spots on lips or in mouth Sudden loss of consciousness Swollen glands Unusual bleeding or bruising Unusual tiredness or weakness Get emergency help immediately if any of the following symptoms of overdose occur: