Introduction: Bupivacaine is the first choice of local anaesthesia [LA] intrathecally for Caesarean Section or Labour analgesia. Aim: To assess intrathecal fentanyl (25 ugms)+2.5 mg of 0.5% bupivacaine effect during labour in second stage and its effect on mother & child. Materials and methods: This study was a prospective, observational study which was controlled and evaluated spinal analgesia efficacy in single dose in managing labour pain. 80 patients are taken for observation 40 controlled group, 40 study group. In study group intrathecal fentanyl 25 μg + hyper baric bupivacaine was given. Results: Duration of analgesia lasts up to 5 hours, patient’s satisfaction levels were good with no side effects, C/S rate was 1 and it is statistically not significant. Conclusion: Administration of narcotics intrathecallyhas an analgesia effectand is the best option in women who have labour. ITN will have particular appeal for facilities that do not have readily available 24/7 epidural services. Fentanyl + LA in low doses is effective analgesia with no significant side effects.