From the Manufacturer:
C12 is a natural, milk-protein-derived substance with beneficial effects for maintaining healthy blood pressure. C12 Peptide demonstrated this benefit in a University of Pennsylvania study, confirming earlier results found in previous studies in Japan. The trial indicated that C12 Peptide promotes a healthy diastolic and systolic blood pressure.
C12 Peptide works by modifying the body’s ACE (angiotensin-converting enzyme) activity. The conversion of the body’s levels of angiotensin I to angiotensin II by the ACE enzyme leads to a contraction of the blood vessels, which results in elevated blood pressure. Studies showed that C12 Peptide acted as a natural inhibitor to ACE.