I discovered my top Nootropic stack after much research and sampling of different racetams and choline sources. Modafinil Piracetam Choline Fish Oil (high EPA + high DHA) Choline I found that Choline Bitartrate is so cheap, and it works, I dont bother with expensive other Choline sources. Piracetam = is getting HARD to find in summer 2015! It used to be available via ebay, and even via amazon.com! Now, very very few retailers sell it online. Is it being phased out like Ephedrine was in the 90s and 2000s?