There's a stigma about the meds in a lot of places, but I still remember how much they helped me through middle school. I literally got math-related work done 10 times faster that way.
Unfortunately the stuff that worked for me (Adderall) is basically just meth, and I can't get a hold of it in Japan on account of it being illegal. I think it's not even very possible to get a hold of ADD-related meds outside of the US (France classifies it as a children's disorder, so after 18 tough luck).