MYOLAX 100 MG is a tablet containing 100 milligrams of tolperisone hydrochloride. 1 Tolperisone is a centrally acting muscle relaxant used to relieve muscle spasms and the associated pain. It works by acting on the spinal cord and brain to reduce muscle stiffness and improve muscle movement. MYOLAX 100 MG is indicated for conditions such as increased muscle tone due to neurological disorders, muscle spasms, contractures, and rigidity. 2 It may also be used in the treatment of certain vascular diseases to improve blood flow. 3 The usual adult dosage is 50-150 mg three times daily, as directed by a physician. Common side effects can include nausea, vomiting, headache, and rarely, hypersensitivity reactions. 4