Essential Amino Acids (EAAs) vs Whey Protein Powder As a long-time lifter and ultra runner, I use whey protein every day and take essential amino acid supplements during workouts. Since whey is a complete protein source, it contains all essential and non-essential amino acids (1). , phenylalanine, tryptophan) are quite low in whey protein. , amino acids not bound up in complex protein molecules), which may facilitate their digestion. David Robinson, PhD UK Fitness ProMar 27 · 13 min read
