Soy protein for musclebuilding Thats right. A few years ago people might have laughed at the thought of a product like Advanced Soy Pro. Not today. First Universal Nutitions Advanced Soy Pro is a complete protein supplement it contains all the necessary amino acids that an athlete needs to grow. Second Advanced Soy Pro has the highest ratio of"critical cluster amino acids glutamine all three branchedchain aminos & arginine found anywherehigher than egg milk & even whey Thi