>>14415847Coffee + L-theanine is goat (legal everywhere, inexpensive)
You cannot top Adderall, Ritalin and Concerta. This works every time and for everyone.
Modafinil/Provigil if you're not into Methylphenidate/Amphetamine.
Fish oil might help.
And for last: exercise, healthy diet and calories, vitamins and minerals, and get good sleep.