Get your blood pumping with Irwin Naturals L-Citrulline + L-Arginine! Healthy blood flow is essential to optimal physical performance. That's why this formula includes not only potent servings of the amino acids L-citrulline and L-arginine but also the unique and potent ingredient AQTIV organic beetroot powder, all of which support nitric oxide production to boost blood flow and support physical performance. To further encourage men's sexual health, each 3-softgel serving delivers a concentrated horny goat weed extract for traditional herbal libido support.