Kaynac-MR Tablet is a combination analgesic and muscle relaxant formulation containing Aceclofenac 100mg, Paracetamol 325mg, and Chlorzoxazone 250mg. Aceclofenac, a non-steroidal anti-inflammatory drug (NSAID), provides effective relief from pain and inflammation by inhibiting cyclooxygenase enzymes, thereby reducing prostaglandin synthesis. Paracetamol acts as an analgesic and antipyretic, enhancing pain relief and reducing fever through central inhibition of prostaglandin synthesis. Chlorzoxazone is a centrally acting muscle relaxant that alleviates muscle spasms and associated discomfort by depressing polysynaptic reflexes in the spinal cord. Kaynac-MR Tablet is indicated for the management of musculoskeletal pain conditions such as strains, sprains, back pain, and other soft tissue injuries where inflammation, pain, and muscle spasm coexist. The combined action of these agents provides comprehensive symptomatic relief, improving patient mobility and comfort. This medication should be used under medical supervision, with caution advised in patients with hepatic, renal, or gastrointestinal disorders. Common adverse effects may include gastrointestinal discomfort, dizziness, or allergic reactions. It is contraindicated in individuals with hypersensitivity to any component, active peptic ulcer, or severe hepatic impairment. Kaynac-MR Tablet should be taken as prescribed to ensure optimal therapeutic outcomes.