Arginine & Citrulline by Now Foods is a food supplement aimed at improving blood circulation. L-arginine and L-citrulline are amino acids that have a wide range of effects on the body.
Both of these protein building blocks are found naturally in food and are synthesized in your body from other sources. Both amino acids are precursors of nitric oxide, a gas that has the ability to dilate the blood vessels to improve circulation. Scientific studies suggest that this substance can help to treat afflictions that improve vasodilation.
At a sporting level, an increase in nitric oxide represents an increase in oxygen and nutrients towards the muscle tissue, which can be beneficial for increasing muscle mass and accelerating recovery after training. Both amino acids have a detoxification effect on the organism and can be useful for improving the cicatrisation of wounds, growth of muscles and production of sperm (spermatogenesis). L-Arginine also stimulates the release of the growth hormone, of insulin and other hormones in the organism.