Cnp progfx is a very powerful pre workout formula cnp progfx delivers a perfectly balanced product to assist your performance goals it includes arginine nitrate a fusion of l arginine and nitric acid combining these two efficient potential vasodilators may support optimal nitric oxide production and give you maximum pump the peak of an effective workout citrulline malate has been further added to synergistically work together with the arginine which may further support nitric oxide pro