Paracetamol, a para-aminophenol derivative, has analgesic and antipyretic properties and weak anti-inflammatory activity. It may be given by intravenous infusion for the short-term treatment of moderate pain, particularly following surgery, and fever. Paracetamol is often the analgesic or antipyretic of choice, especially in the elderly and in patients in whom salicylates or other NSAIDS are contraindicated, such patients include asthmatics, those with a history of peptic ulcer and children.