From a biochemisty perspective, NO2 is metabolized to NO, which is taken up by cells lining the blood vessels and causes them to dialate. This is why angina patients take nitroglyceryn, top open up their blood vessels during an attack. Viagra makes the cells that line the blood vessels more sensetive to NO, which is both how it does what it does, and also why mixing Viagra and nitrates can cause a fatal drop in blood pressure.
Nope, it's not a permanent pump. It might dialate the blood vessels, providing more blood flow, but I wouldn't get to excited about it in pill form. Remember, cured meats are also full of nitrates, and that's not considered a good thing. Perscription nitrates are in the form of tiny little nitroglycerin pills you put under your tounge, or a paste you rub on your chest, or an inhaled form. In any of these forms, they get into you blood stream much more quickly and more directly than if you swallowed it in pill form.
Keep in mind that those $1 books are actually sales brochures, and it's not surprising they're short on hard science. All those "lose weight while you sleep" pills are also packaged with inserts containing good common sense diet and exercise programs, because after all, if you just eat right and work out right, you'll get results. Doesn't really matter if you take the magic pill or not!
If I sound like a skeptic, it's because I am. I have seen SO many "hot new supplements" come and go, and I have some education in biochemistry and marketing. The only things I take now are multivitamins, whey powder, creatine, and glutamine. Ok, and the Androgel, but I have a prescription for that :-) I also suspect HMB might be good, but I still haven't made up my mind. All the rest I don't believe in anymore.
Edit: I forgot, I also believe in Pyruvate for helping burn fat.
< Message edited by Powerhaus -- 1/10/2004 11:58:21 AM >