Eracox 90 Tablet contains Etoricoxib 90 mg, a selective cyclooxygenase-2 (COX-2) inhibitor used primarily for the management of pain and inflammation associated with various musculoskeletal and inflammatory conditions. Etoricoxib exerts its therapeutic effects by selectively inhibiting the COX-2 enzyme, thereby reducing the synthesis of prostaglandins responsible for pain and inflammation, while sparing COX-1, which helps maintain gastrointestinal mucosal integrity. This selective action results in effective analgesia and anti-inflammatory benefits with a potentially lower risk of gastrointestinal adverse effects compared to non-selective nonsteroidal anti-inflammatory drugs (NSAIDs). Eracox 90 is indicated for the treatment of osteoarthritis, rheumatoid arthritis, ankylosing spondylitis, and acute gouty arthritis. It is also used for the management of chronic musculoskeletal pain and postoperative pain relief. The recommended dosage and duration of therapy should be individualized based on the patient's clinical condition and response to treatment, with caution advised in patients with cardiovascular risk factors or renal impairment. Common side effects may include headache, dizziness, hypertension, and gastrointestinal discomfort. Use of Eracox 90 should be under medical supervision, with regular monitoring to minimize potential adverse effects and ensure optimal therapeutic outcomes.