I'm sorry for whatever happened to your brother. Psychology is sadly not an exact science yet. But when I stopped taking my drugs, I was basically nonfunctional for months. You can't generalize from one data point.
> But when I stopped taking my drugs, I was basically nonfunctional for months.
The body adjusts to compensate for the activity of the drug in the body, so the original problem frequently gets worse if the drug is taken away suddenly. There are strategies for helping people get off psychotropic drugs, but I don't think they cover this in psychiatrists' training programs.
> You can't generalize from one data point.
I don't know anything about my step brother, other than that my mom mentioned that he'd gotten himself off the pills. It might've taken him a while.