He says "no coffee". Apparently it's neither natural enough nor "pure brain-food" enough.<p>Piracetam is another popular nootropic. It's cheap, well-studied (as nootropics go, anyway), and probably pretty benign.<p>My unrequested advice is that if you're thinking about taking nootropics, you should probably make sure you're eating reasonably well and getting enough sleep and exercise first. <i>Then</i> consider the trade-offs.