<prompt> A young man is with known heroin addiction is brought in the emergency in unconscious state. On examination, the patient has decreased bowel sounds, depressed respiration and pin point pupil. The treatment of choice for this patient isOral natrexoneIV naloxoneOral diazepamOral Buprenorphine  <response>: IV Naloxone 0.1-0.4 mg . Dose repeated every 1-2 hour as naloxone is sho acting. As patient is unconscious drug cannot be given orally. Ref: KD Tripathi 8th ed. 