Two. In hospitals in Britain, medical patients are often given medically pure heroin as a painkiller (for example, during hip operations). Everyone agrees heroin is more potent than Percocet or Oxycontin. How many people become addicted to this heroin in British hospitals? Virtually none. This shows there has to be something else going on with the opioid crisis—some part of the picture that the chemical alone can’t explain.
