BACKGROUNDBrachial plexus block in supraclavicular approach is a very good postoperative analgesia. Midazolam, a water-soluble benzodiazepine has been used by various routes to prolong analgesia. The analgesic efficacy of midazolam with bupivacaine in brachial plexus block produces significantly faster onset of sensory and motor blockade and prolongs the duration of sensory and motor block and duration of analgesia.The aim of this study is to compare the effectiveness of addition of midazolam as an adjuvant to bupivacaine in supraclavicular approach of brachial plexus block in upper limb surgery.