DESC: It takes 6,000 lbs of Whey To Produce 1 Tub of Pro-NOS Pro-NOS consists of the ACTINOSTM fraction that is designed to up-regulate nitric oxide synthase, and the VAT-Burn- fraction that has been studied to help burn visceral adipose tissue (VAT), or belly fat. uild More Muscle - Faster Increase Nitric Oxide by 950% Pro-NOS Tastes Great!