L-Citrulline Blood Flow, Detoxification, Sexual Performance Supports cardiovascular health by relaxing blood vessels, allowing for increased blood flow and more blood and nutrients circulating in the body. Helps the liver's detoxification process by converting toxic ammonia into urea for elimination. Produces nitric oxide, a key component in the relaxation and dilation of blood vessels, which not only supports cardiac function but also enhances sexual function and enjoyment. L Citrulline has the added benefit of being chemically recycled back into arginine in the endothelial cells of the blood vessels. Citrulline and arginine have similar benefits, however citrulline is a more active and readily available nutrient for cardio function, and it is also a preferred source of nitric oxide synthesis because a greater percentage is directed toward nitric oxide production.