Supplements for brain and critical thinking

[Boonfly8]

Probably not been asked too much but are there any supplements that is designed to stimulate concentration, deep and critical thinking? I am an actuary and analyst, there are times where I feel I need to concentrate and do good analysis, find patterns, etc... Analogy would be like anything cardarine for endurance whereas something for this? I know adderall, etc but that is prescription and the hangover is hard on the body.