R1 Protein by Rule 1 is a 100% whey isolate and hydrolysate blend delivering 25g protein at 87% purity by weight, with no concentrates, fillers, gums, or creamers. Each scoop provides 12g essential amino acids and 6g+ naturally occurring BCAAs at just 110 calories. Informed Choice certified for banned substance testing. 28 servings per container.