we need a new drug, here. (just kidding) sort of like ginkoba. maybe extracts, plus caffeine. a lot of people learn to drink coffee in college. perhaps it helps temporarily - but the only thing that really helps in the long run, imo, is higher elevations or exercise. one football player sleeps in a tent that mimics higher elevations (with less oxygen). he says it promotes more red blood cell production. higher levels of oxygen in your blood, help learning too. somehow - i retain more if i am exercising pretty much daily. and, i don't get sick as often.