Here is a review left by a customer on a product. Would you say he was satisfied or dissatisfied?
Title: Don't waste your money, this is snake oil.
Review: I heard all of the good things about this and read the reviews and never once found a published study about it. I decided to try it myself and I gave it 3 months to see any benefits. I got worse. I couldn't concentrate at work unless i was loaded with coffee and shut off everything around me. You'll notice that all this company has is testimonials but zero randomized controlled trials.
