There is no rule, But lot of recreational drugs are the best medicine sometimes. We couldn’t imagine an operation without opioids. Not even the dentist.. codeine on cough syrup is there for a reason, works like a charm. Cocaine is an amazing medicine for local operations and as an SSRI.. ketamine works fine to disconnect brain from body.. apparently meth works somehow on adhd. We call it ritaline or adderall..

So, the difference from a drug to a medicine is probably how you use it..

Great medicines are great drugs in some cases.

Psychedelics are indeed a medicine for the mind/soul.