Objective: objective of this study is to compare the onset, intensity and duration of sensory and motor block, the quality and duration of post operative analgesia and adverse effect if any in both control and clonidine group. Method: Present study was carried out on 100 patients which were divided into two group. One group (50 subjects) is control group and another group is Clonidine group (50subject) which received clonidine as an adjuvant to local anaesthetic in supraclavicular brachial plexus block with proper anaesthetic technique e. Duration of sensory block, motor block, duration of postoperative analgesia, sedation score and VAS score were obtained in both groups and values were compared with unpaired‘t’ test. Values were consider statistically significant when p <0.05. Result: Present study state that there is statistically significant difference between mean values of onset and duration of sensory and motor block, duration of postoperative analgesia, sedation score and VAS. Conclusion: Clonidine added to local anaestheitic in supraclavicular brachial plexus block hastens the onset, prolongs the duration of sensoryand motor blockade, provides sedation and longer pain-free period without significant hemodynamic alterations.

Keyword: Supraclavicular block, Clonidine, Adjuvant to local anesthetic.