Primeval Labs has finally launched all three of its previously previewed pre-workouts, Engorge, Erupt and Adrenal Rush. The arrival of the supplements has of course revealed each item’s formula, and an extremely interesting angle. Basically the pre-workouts have been designed as a sort of customizable system. Adrenal Rush is the stimulant product, Erupt the performance formula and Engorge the stimulant free pump supplement. All of which can be stacked together or used on their own. You can find more on each pre-workout by clicking on the product names listed, or go ahead and purchase any or all three direct from Primeval Labs through its official website.