Optimum's Vassive N.O. Formula-X is now available.
It has 3 grams of Arginine as well as the following sustained release ingredients:
L-Citrulline Malate, Quercetin, American Ginseng Extract, L-Histidine, Rhodiola Extract, L-Norvaline, Cnidium Monnier, Pomegranate Concentrate, and Cocoa Extract (Standardized for Theobromine)
Comes with 180 tablets (850 mg Sustained Release Delivery System)
http://www.optimumnutrition.com/products/vassiveno-formula-x-p-262.htmlI am currently not taking any nitric oxide products, but I plan on ordering it to try it out!