TAH, being a large scale gynaecological operation, is a construction bound to cause serious postoperative pain to the patient in that the procedure will inevitably entail massive tissue dissection. Management of this postoperative pain is of utmost significance because poor analgesia may lead to delayed mobilization of the patient, long duration of hospitalization and also general increase in the morbidity of postoperative period. Traditionally, in these facilities, opioid analgesics are the most common and the most popular means of controlling postoperative pain. Nevertheless, the varied and pervasive use of opioids is largely constrained by its well-reported, dose-dependent systemic adverse effects. Nausea, vomiting, sedation, and respiratory depression are complications that severely degrade the recovery process of the patient and reduce his or her satisfaction.