Carfentanil

Carfentanil is a drug. It is a strong opioid that is around 10,000 times stronger than morphine and around 100 times stronger than fentanyl. Since carfentanil is so strong, humans can die from overdose easily, and is instead usually used on big animals like elephants.

Carfentanil was first made in 1974 from fentanyl and was used in veterinary medicine in 1986.

References

1. 1 2 https://www.sciencedirect.com/science/article/abs/pii/S0379073821000359?via%3Dihub
2. ↑ Stanley TH, Egan TD, Van Aken H (February 2008). "A tribute to Dr. Paul A. J. Janssen: entrepreneur extraordinaire, innovative scientist, and significant contributor to anesthesiology". Anesthesia and Analgesia. 106 (2): 451–62, table of contents. doi:10.1213/ane.0b013e3181605add. PMID 18227300. S2CID 20490363.
3. ↑ "Fentanyl drug profile". www.euda.europa.eu. Retrieved 2026-10-08. {{cite web}}: Text "The European Union Drugs Agency (EUDA)" ignored (help)