Imacin-SR 75 Capsule contains Indomethacin 75 mg, a nonsteroidal anti-inflammatory drug (NSAID) indicated for the management of moderate to severe pain and inflammation associated with conditions such as rheumatoid arthritis, osteoarthritis, ankylosing spondylitis, and acute gouty arthritis. Indomethacin exerts its therapeutic effect by inhibiting cyclooxygenase (COX-1 and COX-2) enzymes, thereby reducing the synthesis of prostaglandins which are mediators of inflammation, pain, and fever. The sustained-release formulation of Imacin-SR allows for prolonged plasma concentration, improving patient compliance by reducing dosing frequency. It is recommended to administer the capsule orally with food or milk to minimize gastrointestinal irritation, a common adverse effect associated with NSAIDs. Caution is advised in patients with a history of peptic ulcer disease, gastrointestinal bleeding, renal or hepatic impairment, and cardiovascular disorders. Use during pregnancy and lactation should be avoided unless clearly necessary. Common side effects may include dyspepsia, nausea, headache, dizziness, and rarely, serious gastrointestinal or cardiovascular events. Regular monitoring of renal function, liver enzymes, and blood counts is advisable during prolonged therapy. Imacin-SR 75 Capsule should be used under medical supervision, adhering strictly to prescribed dosages to optimize therapeutic outcomes and minimize risks.