There was a psychiatrist in my town who specialized in prescribing stimulants and benzodiazepines to hippies. One of his patients would get a scaled-up pill bottle the size of a small trash can full of Dexedrine every month, another got 3x a dose of Klonopin that would turn me into zombie. Frequently his "patients" would use only a portion of their medication and sell the rest for (often badly needed) income.

I almost dropped the dime on him because one of his patients was a severely disturbed friend of mine who did not have a proper diagnosis (I'd conjecture today she had schizoaffective disorder) and I think would have benefited from a change in medication -- but we never found out because she took her own life. I'm pretty sure somebody else dropped the dime on him.