From experience, gingko biloba is unqualifiably good. Taurine and guarana are like different forms of caffeine, but not remarkably different. As for ginseng, it's been a while since I've had it, and it predates my interest in meditation.johnny wrote:thanks! have these worked for you? does ginseng have a lot of bad side effects?
Either way, they're four things that are "this side of the line" that you could try and see how they work for you.
Metta,
Retro.