Introduction: Previously studied epidural narcotic agonist such as fentanyl and morphine are capable of producing post-operative analgesia with undesirable side effects such as pruritis, nausea and respiratory depression that have limited their use. The objective of our study was to compare the duration and quality of postoperative analgesia offered by two different doses of epidural butorphanol. Methods: Our study comprised of Group A and B of 30 patients each, receiving 1mg and 2mg of butorphanolrespectively, diluted upto 10ml of normal saline and given by epidural catheter. Results: The study was a prospective randomized double blind study.In bothgroups A and B, epidural butorphanol in doses of 1mg and 2mg, both provided good quality of postoperative analgesia as determined by the Visual Analogue Scale scores in the postoperative period. Conclusion: The duration of postoperative analgesia provided by 2mg of epidural butorphanol is slightly longer than that provided by 1mg, but the difference is statistically not significant