Intravenous Paracetamol is a centrally acting antipyretic and analgesic, has less gastrointestinal and platelet inhibiting side effects and is clinically better tolerated. IV Paracetamol could potentially provide adequate perioperative analgesia as a single agent for mild to moderate pain. Diclofenac a NSAID that mediate anti-inflammatory, analgesic and platelet inhibiting effects. NSAIDS are effective in peri operative setting for mild to moderate pain, but their usefulness may be limited due to their tendency to cause gastrointestinal and surgical site hemorrhage and renal failures in high risk patients. The present study conducted in 50 patients aged between 12-20 yrs who are scheduled for elective Tonsillectomy under general anesthesia in ENT hospital, Osmania Medical College, Hyderabad. To conclude that Paracetamol given every 6 th hourly parenterally can be used for intra operative and postoperative analgesia (mild to moderate pain) in elective Tonsillectomy in view of its good quality of analgesia, and its anti-pyretic effect.