Natural Factors L-Arginine is an amino acid that supports heart and immune system function, supports muscle strength and density, and improves sexual health Features of Natural Factors L-Arginine Supports the immune system Promotes muscle strength and density Increases nitric oxide production aneurysm Helps improve blood circulation Helps lower blood pressure Helps prevent atherosclerosis Promotes wound healing Reduces blood clot formation Helps in cases of angina Improves erectile function Improving blood flow to erectile tissue in men Strengthens the secretion of gth hormone, especially in young people