Acetal-MR is a prescription medication used to relieve musculoskeletal pain, swelling, and muscle spasms. Each tablet typically contains Aceclofenac (100 mg), Paracetamol (325 mg), and Chlorzoxazone (250 mg). It treats discomfort from sprains and back pain by reducing inflammation and blocking pain signals.How It WorksAceclofenac (100 mg): An NSAID that blocks prostaglandins (which cause pain and inflammation).Paracetamol (325 mg): An analgesic and antipyretic that raises your pain threshold and reduces fever.Chlorzoxazone (250 mg): A muscle relaxant that works centrally on the brain and spinal cord to relieve muscle stiffness.Important DetailsUsage: It is usually taken with or after meals to prevent stomach upset. Swallow the tablet whole with water—do not crush or chew it.Side Effects: Common side effects include nausea, dizziness, heartburn, and drowsiness.