Methocarbamol is a medication used to relieve muscle spasms, and relax neck and jaw muscle contraction (lockjaw) caused by tetanus. Common side effects of methocarbamol include slow heart rate (bradycardia), low blood pressure (hypotension), inflammation with blood clots in the vein (thrombophlebitis), fainting (syncope), memory loss (amnesia), sleeplessness (insomnia), dizziness. Methocarbamol is used with rest, physical therapy, and other measures to relax muscles and relieve pain and discomfort caused by strains, sprains, and other muscle injuries. Methocarbamol is in a class of medications called muscle relaxants. It works by slowing activity in the nervous system to allow the body to relax Learn about the side effects of methocarbamol, from common to rare, for consumers and healthcare professionals. Find patient medical information for Methocarbamol (Robaxin) on WebMD including its uses, side effects and safety, interactions, pictures, warnings, and user ratings Learn about methocarbamol usage and dosing. Read the latest news and reviews about the drug as well as potential side effects and popular alternatives. Methocarbamol is a muscle relaxant used to relieve pain and discomfort from muscle spasms. Learn about uses, dosage, side effects, and warnings. Methocarbamol is used to relieve the discomfort caused by acute (short-term), painful muscle or bone conditions. However, this medicine does not take the place of rest, exercise, physical therapy, or other treatment that your doctor may recommend for your medical problem. Methocarbamol interacts with benzodiazepines, like Xanax, as well as opioids and alcohol. See more interactions and ways to manage them. View methocarbamol information, including dose, uses, side-effects, renal impairment, pregnancy, breast feeding and contra-indications. Methocarbamol is a muscle relaxant used to treat acute, painful musculoskeletal spasms in a variety of musculoskeletal conditions. [13] However, there is limited and inconsistent published research on the medication's efficacy and safety in treating musculoskeletal conditions, primarily neck and back pain. [13] Methocarbamol injection may have a beneficial effect in the control of the.