Each illicit fentanyl and carfentanil are exceptionally perilous opioids that will cause a quick overdose and Demise when abused, but carfentanil is more strong than fentanyl. Several doses from the anti-overdose drug naloxone (Narcan) is probably not effective to reverse an overdose. Keep on studyingFentanyl and norfentanyl have been quantified in