I have been taking this supplement for a few weeks now. I think the combination of nutrients is superb. The only problem I see is that when I received the supplement I checked the nutrition label and noticed that it says toothed club moss extract (1% huperzine) 10mcg, instead of the Huperzine A 50mcg that is posted online. The huperzine A is the most potent substance in this formula & the recommended dosage is 50-100mcg daily. If this combo supplement contained at least 25mcg of Huperzina, then it would be #1 on my scoreboard. Until then, #1 goes to piracetam. |