Huperzine Rx-Brain works for me in less than an hour. VERY powerful and I have to take only half of the pill for 3 days in a raw, then make a break, for liver relief (it starts hurting). Then I can take it again and it really helps to use my mind, restore short term memory and improve my mood. Great product. I haven't found so far nothing better working than that, just be aware of the dosage.
Posted by iHerb Customer on Jan 01, 2014 | Verified Purchase
I fine it helpful to help me concentrate
Posted by iHerb Customer on Apr 15, 2017 | Verified Purchase
Taking this and other supplements for last 60 days and have seen an improvement in overall performance.
Posted by iHerb Customer on Apr 08, 2016 | Verified Purchase
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