Natural Peptide Bioregulators are peptides with fewer than 50 amino acids and a small molecular weight. In the gastrointestinal tract, they break down into amino acids and small peptides, matching DNA to activate protein synthesis in specific body systems. Their action is subtle and gradual.* Defender is a meticulously balanced blend of natural bioactive peptides sourced from pituitary, thymus, and adrenal glands.* The Defender Complex includes: Endocron - pituitary gland peptide Thymusol - thymus peptide Adrenact - adrenal gland peptide