Collagen Peptides? Collagen peptides represent a scientifically engineered form of collagen that has undergone hydrolysis—a process that breaks down the long, fibrous collagen molecules into shorter chains of amino acids called peptides. This transformation is crucial for supplementation because intact collagen molecules are too large for efficient absorption through the digestive system. By converting collagen into peptides, manufacturers create a bioavailable supplement that can be more readily absorbed into the bloodstream and delivered to tissues throughout the body.