It is certainly unclear what I meant when I said "they were approved by the FDA" - I was referring to 'modern opioid painkillers' - medications like oxycodone a

It is certainly unclear what I meant when I said "they were approved by the FDA" - I was referring to 'modern opioid painkillers' - medications like oxycodone and fentanyl [1], not heroin. Those enjoy FDA approval to this day. Heroin, as a schedule I is not recognized as having any medical use. [1] https://www.accessdata.fda.gov/scripts/cder/daf/index.cfm?event=overview.process&ApplNo=202577 https://www.accessdata.fda.gov/scripts/cder/daf/index.cfm?ev...