Zix-MR Tablet is a combination medication containing Aceclofenac 100 mg and Thiocolchicoside 4 mg, indicated for the management of musculoskeletal pain and inflammation associated with conditions such as osteoarthritis, rheumatoid arthritis, ankylosing spondylitis, and acute musculoskeletal disorders. Aceclofenac, a non-steroidal anti-inflammatory drug (NSAID), exerts its effect by inhibiting cyclooxygenase enzymes (COX-1 and COX-2), thereby reducing the synthesis of prostaglandins responsible for pain, inflammation, and fever. Thiocolchicoside is a muscle relaxant with anti-inflammatory and analgesic properties, acting as a selective antagonist of GABA and glycine receptors in the spinal cord, which helps alleviate muscle spasms and stiffness. The combination of these agents provides synergistic relief from pain and muscle spasm, improving patient mobility and quality of life. Zix-MR Tablet should be used under medical supervision, with caution in patients with a history of gastrointestinal ulcers, cardiovascular disease, hepatic or renal impairment. Common adverse effects may include gastrointestinal discomfort, nausea, dizziness, and allergic reactions. It is contraindicated in patients with hypersensitivity to either component, active peptic ulceration, or severe hepatic or renal dysfunction. Dosage and duration of therapy should be individualized based on clinical response and tolerability.