Quote from article:

“These experiments show indirectly that mammalian cells can reduce nitrate to nitric oxide,” Panesar says. Nitric oxide acts as a hormone in the body, inhibiting hormone synthesis in the testis or causing vasodilation, he adds. For instance, nitric oxide action is the mechanism behind the anti-impotence drug, Viagara, but too much nitric oxide during early developmental stages appears to depress testosterone synthesis...


Wouldn't the nitrate conversion principal that the article talks about be the same with all the NO products on the market?