• 1/5 September 09, 2011
    Reviewer: k g in Indiana
    I really used to love this product until I realized how much I was being ripped-off.. This product is very effective but save yourself BIG DOUGH and just go with the AAKG Powder that NOW has out on this site. It's the same main active ingredient and works just as well. MUCH CHEAPER!! The NO2 Black "delivery system" is a bunch of hype. This product will leave you broke. Totally not worth it. But I live and learned so you don't have to. Skip this and go with the NOW AAKG powder.
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  • 1/5 March 19, 2010
    Reviewer: A customer in Illinois
    Don't waste your money with this product.

    It contains Arginine Alpha-Ketogluterate, which is the ingredient used to increase NO production. It contains 3g of this per serving, and so does Nitric Boost by Optimum nutrition. The only difference is the proprietary blend for a little energy. And the prices are completely different, $30 for 180 tabs of Nitric Boost and $53 for NO2 Black?

    Personally I love Nitric Boost and am on my third bottle, I also use Supepump 250 by gaspari. Let me tell you, I'm a veiny SoB. Use Nitric Boost for the same results and to save some money.


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