Carfentanil is a powerful synthetic opioid primarily used as a tranquilizer for large animals, such as elephants. It is estimated to be about 100 times more potent than fentanyl, which is already a highly potent opioid used for pain management in humans. Due to its strength, even a tiny amount can be extremely dangerous and potentially lethal to humans. Because of its potency, carfentanil has been associated with the opioid crisis, leading to accidental overdoses and fatalities. It is not approved for human use and poses significant risks if misused or encountered in illicit drug markets. Awareness of its dangers is crucial for public safety.