I second EVERYTHING that Simcha wrote.

What you describe is both illegal and unethical. It is illegal to give out anyone's info to a third party without a release from the client. And giving meds to a third party to be slipped into someone's food is reprehensible and deadly not just illegal.

A psychiatrist has the ability to involuntarily commit someone... A hard choice I am sure...But they have that ability...

I do think that it is within your ability to file a formal and anonymous complaint if you are so inclined.

What an awful situation...

SpottedOwl and a big hug to your friend!