Background: Caesarean section is one of the most commonly performed surgical procedures worldwide and 80–90% of them are performed under spinal anaesthesia. Adding adjuvants drugs to intrathecal local anaesthetics improves quality and duration of spinal blockade, and prolongs postoperative analgesia. The aim of our study was to compare the efficacy of using intrathecal Fentanyl, morphine and Dexmedetomidine as adjuvants to Bupivacaine in patients undergoing caesarean section at a tertiary hospital.