Introduction: Incidence of shivering after spinal anaesthesia is common complaint in present anaesthesia practice. Several drugs available to manage shivering such as Pethidine, Tramadol, Dexmedetomidine etc. Among all Dexmedetomidine is effective. This study was designed to assess the efficacy of Dexmedetomidine, Tramadol and Pethidine in the management of shivering under spinal anaesthesia. Materials and Methods: A total 120 cases between age group 21 to 60 years, undergoing elective lower abdominal and lower limb surgeries under spinal anaesthesia method between ASA grade I&II were recruited. Based on drug administered study cases were randomly divided into 3 groups Group 1 with Inj. Tramadol 0.5mg/kg, Group 2 with Inj. Pethidine 0.5mg/kg and Group 3 with Inj. Dexmedetomidine 0.5μg/kg. Heart rate, BP, temperature, Shivering grades and seduction grades was noted for every 5 minutes interval till 15 min and then 15 min interval till 120 minutes. Results: Dexmedetomidine drug was showed better outcome than other drugs. Among the 40 cases, three cases who were given dexmedetomidine had shivering. In tramadol and Pethidine drug groups, 22 and 9 cases had shivering respectively at various time intervals. Dexmedetomidine had onset of sedation at 5 minutes with sedation score 3. In tramadol group, onset of sedation was seen at 15 minutes with sedation score 2. In Dexmedetomidine group, 5 cases had bradycardia and 3 cases had hypotension which was statistically not significant. None of the cases with above symptoms was found in tramadol and Pethidine group. Conclusion: Dexmedetomidine 0.5 μg/kg has been shown effective in reducing shivering than tramadol 0.5 mg/kg and Pethidine 0.5 mg/kg. Dexmedetomidine had higher degree of sedation rate than tramadol and Pethidine