Aims and Objectives – To evaluate the pros & cons, both for the parturient and the neonate, of the intrathecal use of fentanyl and sufentanil, in combination with bupivacaine, for cesaerean section. Material and methods – A double blind and randomized prospective study was conducted on 90 parturients of ASA grade I and grade II undergoing non-emergency caesarean section under spinal anaesthesia. Parturients were divided into 3 groups of 30 parturients each depending on the intrathecal drug combination injected. GROUP A: 2 ml 0.5% heavy bupivacaine. GROUP B: 15 micrograms fentanyl with 2 ml of 0.5% heavy bupivacaine.GROUP C: 5 micrograms sufentanil with 2 ml 0.5% heavy bupivacaine.