Background: Various adjuvants have been used with local anaesthetics in spinal anaesthesia to prolong postoperative analgesia. Dexmedetomidine, the new highly selective α2-agonist drug, is now being used as a neuraxial adjuvant. The aim of this study was to evaluate the onset and duration of sensory and motor block, hemodynamic effect, postoperative analgesia, and adverse effects of dexmedetomidine, or fentanyl when given intrathecally with hyperbaric 0.5% bupivacaine.