To complicate a very complicated problem, Mexican drug cartels have added a benzodiazepine to the already potent fentanyl. Making people get hooked on both without knowing it. Benzo and alcohol withdrawal are the only withdrawals that can kill you. The central nervous system doesn’t take kindly to rewriting. The EMT’s show up and administer Narcan, but have nothing on hand to battle/ reverse the benzo .:. That is, even if they have enough Narcan to reverse the fentanyl.