Introduction: When Dexamethasone added to local anaesthetics, it can prolong the duration of peripheral blocks. Dexamethasone has a long and efcient glucocorticoid structure and having anti-inammatory properties.The aim of this study is to determine the effect of Dexamethasone on the block duration when added to Levobupivacaine used for transversus abdominis block (TAP) applied to patients who underwent caesarean section. Methods: 28 patients with spinal anaesthesia in an American Society of Anesthesiologists (ASA) I and II Risk group were included in the study and divided into two groups. Bilateral 30ml 0.25% Levobupivacaine and 2 ml 0.9% NaCl for the Levobupivacaine group and bilateral 30 ml 0.25% Levobupivacaine and 2 ml Dexamethasone (8mg) for the Dexamethasone group were administered in a TAP block performed. The time need for the rst analgesic in the postoperative period was recorded. The time before Result: the administration of the rst additional analgesic dose was prolonged signicantly in the Dexamethasone group in compared to Levobupivacaine group. The Conclusion: utilization of Dexamethasone, which has a prolonging effect on the TAP block, may be alternative to epidural opioid analgesia in caesarean section.