Xeronac Injection contains Diclofenac 75mg, a nonsteroidal anti-inflammatory drug (NSAID) indicated for the management of acute pain and inflammation associated with musculoskeletal disorders, postoperative pain, and other inflammatory conditions. Diclofenac exerts its therapeutic effect by inhibiting cyclooxygenase (COX-1 and COX-2) enzymes, leading to decreased synthesis of prostaglandins, which are mediators of inflammation, pain, and fever. Xeronac Injection is administered intramuscularly for rapid onset of action, providing effective relief in conditions such as arthritis, ankylosing spondylitis, and soft tissue injuries. It is particularly useful when oral administration is not feasible or when prompt analgesic effect is required. The dosage and duration of treatment should be individualized based on the severity of symptoms and patient response, with careful consideration of contraindications including hypersensitivity to diclofenac, active gastrointestinal bleeding, and severe renal or hepatic impairment. Caution is advised in patients with cardiovascular risk factors, and concurrent use with other NSAIDs or anticoagulants should be avoided. Common adverse effects may include gastrointestinal discomfort, injection site reactions, and headache. Xeronac Injection should be used under medical supervision, with monitoring for potential adverse effects to ensure safe and effective therapy.