Equally illicit fentanyl and carfentanil are exceptionally perilous opioids that may cause A fast overdose and Dying when abused, but carfentanil is a lot more potent than fentanyl. Various doses of the anti-overdose drug naloxone (Narcan) might not be effective to reverse an overdose. Continue studyingNasal Spray: Shop at approximately 25C; don't