I'm curious where this sub believes psychiatry begins and ends in the Western medicine world

When looking at medications specifically. Ones that are not at the forefront of psychiatry, but nevertheless certainly have the capability to cause, and have caused, psychiatric damage

I'm sure virtually everyone would agree prozac is a tool of psychiatry.

How about other medications?

Antiemetics like Ondansetron? Metoclopramide?

Retinoids like Isotretinoin?

Corticosteroids?

Antibiotics? Anesthetics?