Background: Brachial Plexus block either alone or as a part of an anaesthetic sequence is useful as it provides complete relaxation of muscles of upper extremities. Present study was aimed to study additive effects of butorphanol with 0.375% levobupivacaine in supraclavicular brachial plexus block for upper limb surgeries at a tertiary hospital. Material and Methods: Present study was single-center, prospective, comparative study in patients aged 18–58 years, of both gender, with body mass index (BMI) <25 kg/m2, of American Society of Anesthesiologists (ASA) physical status I to II, scheduled for elective forearm and hand surgeries, Patients fit for surgery, were randomly allocated into two groups using as Group BB (1 mg of butorphanol) & group B (bupivacaine only). Results: In present study, general characteristics such as age (year), gender (male/female), ASA (I/II), weight (kg), height (cm) & mean duration of surgery (min) were comparable among both groups & difference was not statistically significant. Time taken for procedure (min) & onset of sensory blockade (min) were comparable in both groups and difference was not statistically significant. Butorphanol when added to levobupivacaine in supraclavicular brachial plexus block had early onset of motor block, improves the quality of block, prolonged the duration of sensory and motor blockade as compared to levobupivacaine alone, and difference was statistically significant. Prolonged the duration of analgesia and late requirement of rescue analgesia as compared to levobupivacaine alone, and difference was statistically significant. Conclusion: Butorphanol added with 0.375% levobupivacaine in supraclavicular brachial plexus block for upper limb surgeries provides rapid onset of block, better analgesia, good hemodynamic stability and profound and longer analgesia.