I got Brain Fog immediately after taking finasteride

I get immediate, brain fog-like sides upon taking even a 0.25mg dose of fin. I usually start to notice them about 30 minutes after taking the pill. If I continue to take it for multiple days, the sides compound, seemingly, and get worse.  Why is this? Why is it immediate? Does anyone else get acute side effects?

We don’t know the answer to your questions but when this is reported and if you were my patient, I would have you stop taking finasteride.