Piracetam, you can go to 2 grams safely, and maybe even bump it up from there, depending on how you feel. Vinpocentine, use at least 20mg - many people get the best effects at 40mg daily. ALCAR, you would need at least 2 grams to really feel the positive effects of it. Also, you should add choline (alpha-GPC at 500mg a day or so). Spread everything into 2 or three doses throughout the day.