Fentanyl’s wide availability in the drug supply has led to an increase in unintentional overdoses. While prevention strategies are available, limited availability stymies their use.
Small quantities of drugs are getting past customs and then being used to create much bigger batches of illegal drugs like synthetic heroin.
Carfentanil is an ultra-potent synthetic opioid. Its only legitimate use is in veterinary practice for large animals such as elephants, but it sneaks into heroin shipments to increase its potency.