Inclusion Criteria:  ASA physical status I and ASA II Age from 18-40 years Scheduled to undergo elective cesarean section under spinal anesthesia.  Exclusion Criteria:  ASA physical status III or IV patients. Patients refuse spinal anesthesia. Patients physically dependent on narcotics or benzodiazepine. Patients with history of drug allergy to one of used adjuvants. Patients with gross spinal abnormality, localized skin sepsis, hemorrhagic diathesis or neurological involvement/ diseases and any contraindication for spine. Patients who are unable to communicate. Morbid obesity. Failure of spinal blockade. Complicated pregnancy.