Mega Mass 4000 Description from Weider Yet again Weider Global's innovative research team has improved our #1 best selling and worldwide gainer. Let us introduce MEGA MASS 4000 EXTREME. For years Mega Mass has been packing on the pounds for people all over the globe with one goal in mind. TO GET BIG! The fundamental rule for all bodybuilders is to flood your system with calories This new innovative MEGA MASS 4000 EXTREME now provides you with a matrix of more highly bioavailable protein, fast and slow burning carbs to deliver over 1,200 calories, 50 g of protein, and over 200 g of carbs. Not only that! There are also other critical building blocks to muscle growth included to promote and support muscle growth such as branched chain amino acids and creatine. MCT are also available as a fast energy source.