That's Nitrous oxide, but NO2 (nitrogen dioxide) isn't something you want to mess around with: http://en.wikipedia.org/wiki/Nitrogen_dioxide

Gerriz...are you sure you got that chemical name right? Nitrogen dioxide is a poisonous gas.

Ah...found a website that tells a bit more about it here: http://www.bodybuildingforyou.com/s...ment-review.htm

Frankly, without any studies that back up the claims made about it (not to mention proving its safety), I'd be awfully leary of shelling out so much money for such a product myself. JMHO.