This study is a prospective double-blinded randomized trial comparing the anesthetic efficacy of 0.5 % Hyperbaric levobupivacaine and 0.5 % Hyperbaric bupivacaine for intrathecal anesthesia in below umbilical surgeries. The primary outcome is to compare the sub-arachnoid block characteristics between 0.5% hyperbaric Levobupivacaine and 0.5% hyperbaric bupivacaine in below umbilical surgeries. Sensory blockade will be assessed after the injection every 2 minutes till and motor blockade is assessed by modified bromage scale every 5 min until the maximum motor block is achieved having a stable sensory level for the next 20 mins. The secondary objective is to assess and compare hemodynamic parameters between the group, hemodynamic parameters – systolic blood pressure, diastolic blood pressure, mean arterial pressure (MAP), heart rate and oxygen saturation are to be recorded 10 minutes prior to the procedure and then at 5 mins, every 10 mins for the first half an hour and at 1 hr., 2 hrs. To assess and compare adverse effects between the group  (nausea & Vomiting, adverse drug reaction, arrhythmia, respiratory depression). The time taken for the first rescue analgesia in the immediate post-operative period will be noted in both groups. Intravenous PARACETAMOL at 15 mg/kg will be used as the Rescue analgesia. Any adverse drug reactions to the drugs will be reported to the ethics committee within 24 hours of the occurrence of the event.