Hemodilator use em or lose em?

I had been taking a hemodilator, namely NO2. Pretty much went through the whole bottle of the stuff and liked it. Seemed to give me more staying power and faster recovery. It was just kinda expensive. Anything else that would do the same things at a cheaper price? Maybe a naturally occuring hemodilator in veggies or somehting?

You can just buy the L-Arginine, it is cheaper and just as effective, if you can find a time released version, that would be even better, GNC has a good supply...