MuscleTech Whey Muscle Builder is our best-in-class, scientifically engineered whey protein formula. . . . In a 6-week study, subjects with at least 3 years of weight training experience who combined these core ingredients in Whey Muscle Builder with a weight training program gained 70% more lean muscle than subjects using regular whey protein (8.8 vs. 5.1 lbs). | MuscleTech

Build more lean muscle than regular whey protein. | MuscleTech