If you rely on drugs to trade, how well will you trade when you do not have access to those drugs? Sounds like a bad idea to me.
I traded POT for several months, ignoring warnings that although POT seems harmless enough it's actually a gateway trade. Sure enough, it led to trading oil futures and I now have the attention span of gnat. Seriously, Green tea, ginseng, and physical activity improve focus. Refined sugar of any kind is the worst. That includes cane sugar, raw sugar, honey, maple syrup, corn syrup, glucose, fructose, fruit juice concentrates and alcoholic drinks. If it's processed or refined from the whole food, it will wreak havoc on your focus and concentration.
Lindt intense dark chocolate: http://www.dark-chocolate-life.com/lindt-dark-chocolate.html I especially like Intense Orange. I wish the percentage of the dark chocolate was higher though, closer to 75% than 50%.
What's really interesting is that both ritalin and adderall are extremely difficult to procure...even from offshore or canadian drug websites. I tried searching on my favorite sites and they are just not available.
a smart but very dangerous question by the OP. better to develop trading skills on own as drugs can soon require an extra higher dose and soon the climb will be really detrimental to health.