funny, my INTPs turn into ENTPs when they get drunk... Just an observation.

as for drugs and personality...

when I was in grad school I was on ritalin for a bit (turned I didnt have adhd but was profoundly hypothyroid).

Oddly-I would sit in E&M classe and follow every details of everything written. I had no idea of all the little pieces that I had missed.

Except I couldnt understand anymore why we were doing the problem. I could no longer see the big picture. Ne vs Si perhaps?