Effective but at a premium price.
I purchased this supplement at a local Vitamin outlet because I've noticed a significant decline in my memory and clarity of focus due to the medications I'm required to take.  I started taking two per day (the dosage listed) for two days and saw no changes.  After two days, I read the fine print on the bottom of the bottle stating that their test subjects were taking four per day, two dosages of two, so I began taking two in the morning and two in the afternoon.<br /><br />I was surprised to find no jolt of energy or giddy-up, as would be evidenced in a supplement containing stimulants such as caffeine, guarana, etc....so they mean when they say Non-Stimulant.  It has ingredients of a true nootropic, but the exact ratios of all ingredients are unknown, you only get them lumped into groups at one group dose.<br /><br />After a week I noticed a marked improvement; I was able to think more clearly, I was less tired, my memory sharply improved and I did feel better & more confident.  However at four tablets per day, to maintain that dosage, I would have to purchase three bottles per month, which I find exceptionally expensive.  So at the moment, I'm trying other supplements on the market because I believe there's got to be a similarly effective option without the premium tag.<br /><br />So bottom line:  The supplement is great but I required the maximum dosage to get the most benefits, and averaging $25 for 40 tablets, that equates to the tune of $75 per month ($2.50/day) in a single supplement.  But it IS effective.  That's why I give it four stars.
Rating: 4 stars