Up You Mass is so powerful it can pack 16 lbs. of muscle onto the frame of the hardest gainer in just 5 weeks! the superior quality and quantities of muscle building nutrients in Up You Mass makes it the ideal weight gainer formula for bodybuilders and athletes. Up Your Mass 5 lb P Butter Cookie. Percent Daily Value are based on a 2000 calorie diet. Daily Value not established. These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose treat cure or prevent any disease.