I used to take prozac, until a decade ago when I weaned off after the scrip didn’t get refilled. A short while later I read about the side effects, was not a happy camper. Then about 2 years after being off the medication, I had taken a class Brain and Biology (minor in psych), in which the instructor claimed that therapists, etc, basically shotgun or take a dart board approach to prescribing meds. Don’t know how true that actually was, but I was rather upset about hearing that. It was a fascinating class though.
Of course it is true. They claim you have some kind of chemical imbalance, which the medicine fixes, but how often do they actually drill into your brain to test the chemistry? The only way they can find something that leads to lucidity is through trial and error.
I bet it was fascinating. Science fiction usually is, up to a certain age. Unfortunately your "instructor" was an unethical liar who deliberately misled you. Sorry you got suckered in by a psychopath.