If indeed what Ed said was true about the doctor giving some sort of medication to a "friend" of Ed's to put in Ed's food, that is assault and is illegal.
Here's the thing Owl---

The doctor committed a crime, the "friend" committed a crime, and the doctor also violated privacy and ethics.

I don't think this is real. It is so unconscionable and unfathomable, it must not be true. You have zero evidence other than hearsay----hearsay is something you heard from another person.

Hearsay is so untrustworthy that it isn't even allowed in a court of law.

If it was indeed real, then I would say that YOU have a duty to report it. When good people stand by and do nothing... well we know what happens. They become complicit in covering up the crimes.

The 3rd party----did they allegedly tell your friend Ed this and then Ed told you? Or was it that the third party told you directly because Ed told him this? Or what?

I think you need to get to the bottom of this and lay it to rest one way or another. I don't trust anything Ed says at this point, because he is far to deep in his psychotic mania from the sounds of it.