Background: In the postoperative period, pain is a major factor which increases morbidity. Major abdominal surgeries lead to debilitating pain after the surgery. Hence we are using transdermal fentanyl patch, applied during the pre-operative period, for effective pain control in the postoperative period. Methodology: 60 patients will be randomly selected belonging to ASA physical status I/II aged 20 years to 50 years, divided into two groups of 30 each. Group A will receive transdermal fentanyl patch 6 hours before surgery whereas Group B will receive a placebo transdermal patch. Both the groups will be compared based on the duration of postoperative analgesia, number of doses of rescue analgesia required and side effects ( if any ) Expected Result: It is expected that the group receiving fentanyl transdermal patch will have superior post-operative analgesia with the requirement of a lesser number of doses of rescue analgesia.