A 45-year-old man with a history of intravenous heroin use is found unconscious with shallow respirations at 6 breaths per minute and pinpoint pupils. His blood glucose is normal. What is the most appropriate immediate drug treatment?AIntravenous naloxone bolus titrated to restore adequate ventilationBIntravenous flumazenil 200 micrograms bolusCIntravenous diazepam 10 mgDIntravenous morphine 10 mgEOral activated charcoalCheck my answer