Each illicit fentanyl and carfentanil are extremely risky opioids which could lead to A fast overdose and Loss of life when abused, but carfentanil is more powerful than fentanyl. Several doses on the anti-overdose drug naloxone (Narcan) might not be effective to reverse an overdose. Keep on looking atNEONATAL OPIOID WITHDRAWAL SYNDROME: Prolonged