What is Muscle relaxant?

A drug with the capacity to reduce muscle tone; may be either a peripherally acting muscle relaxant such as curare and act to produce blockade at the neuromuscular junction (and thus useful in surgery), or act as a centrally acting muscle relaxant exerting its effects within the brain and spinal cord to diminish muscle tone (and thus useful in muscle spasm or spasticity).It is a powerful drug used in cases like Temporomandibular disorder, Low back pain , Neck pain, fibromyalgia.Muscle relaxant has side effects which includes Heart faliure, and Paralysis.The common side effects include dizziness, headache, nausea, nervousness and drowsiness.