May Sale! Pure Advantage PepForm Leucine Peptides contains high levels of leucine-rich peptides isolated from whey proteins to deliver the essential amino acid L-Leucine in a soluble and highly bioavailable form. Providing an enhanced form of L-Leucine to promote lean muscle mass and unlock the anabolic potential through rapid absorption with its high-bioavailable. Leucine Peptides are the most anticipated amino acid supplement on the market and far superior to standard L-Leucine. Structured Peptides are absorbed faster, utilized better, and provides the body with the greatest effects from leucine/ BCAA supplementation.