When I was younger (before my teenage years), I was prescribed Benadryl and I was taking it consistently every single night for about 4-5 years straight. I only realized that this was really bad for my brain about 1-2 years ago due to its anti-cholinergic effects and its link to dementia and other brain conditions. Obviously I've stopped taking it by now, however, I can't help but think that my mind is not as sharp as it could be due to my frequent use of Benadryl during childhood, especially since the brain is at its most crucial developmental stages during that time.

During my teenage years, I also went through a phase where I consistently smoked weed 24/7 for about 2-3 years straight. Since then, I have quit and haven't touched that stuff in about two years now (I'm 20).

I'm currently a computer science student at a pretty rigorous university and I often find myself performing average or even below average compared to my computer science classmates/peers. I always connect this back to my past Benadryl and cannabis use, but obviously, I can't guarantee that.

Given my situation/context, what nootropics would be the best for me?