Aims and Objectives: The Aim of study is to evaluate the onset and duration of sensory and motor characteristics, total duration of analgesia and intraoperative and postoperative complications by adding clonidine to local anaesthetics in supraclavicular brachial plexus block. Materials and Methods: A total of 50 patients were randomly allocated into two groups of 25 each: Group A received 25ml of 0.5% Bupivacaine + 10ml of 2% Lignocaine + 1ml of Normal saline. Group B received 25ml of 0.5% Bupivacaine + 10ml of 2% Lignocaine + 1mcg/kg clonidine diluted to 1ml with normal saline. Results: The mean onset time of sensory block in Group A was 9.40±3.6 min and in Group B was 7.50±3.4min. Mean onset time of motor block in Group A was 15.70±4.6min and in Group B was 10.30±3.75min. Mean total duration of analgesia in Group A was 360.20±45.23min and in Group B was 602.34±65.54min. The onset and duration of sensory and motor block and total duration of analgesia were statistically significant in between the groups. Haemodynamic parameters were statistically insignificant in between the groups. No significant adverse effects are seen in both the groups.