Nimesulide is a pain reliever used for relief of acute pain, painful osteoarthritis, and period pains. It is prescribed by doctors for those over 12 years old and has superior gastrointestinal safety compared to other nonsteroidal anti-inflammatory drugs (NSAIDs). The usual oral dose is 100mg twice daily for up to 15 days to minimize risk of liver toxicity, and it can also be used as a topical gel for relief of pain from sprains and tendinitis. Studies show nimesulide is as effective as paracetamol in reducing fever and discomfort in children with upper respiratory infections. It should only be prescribed after other options are considered due to potential risks.