I have now been on the stack for 21 days. I can honestly say that the only things that seem to work to some degree is L-theanine, ALCAR and Fasoracetam. But not to the extent that I will be buying a refill. I have been on Bacopa for a few days now and that one I can surely feel a real effect but not that strong. For the upcoming battle of the stuttering I have ordered Baclofen and Noopept. :) So stay tuned!