Healthy circulation & blood flow are important for a healthy heart. The natural amino acid Arginine can act as a powerful vasodilator, helping to maintain blood flow to the heart & a healthy vascular system. Arginine also has a positive effect on muscle & is involved in red blood cell formation. • Herpes simplex (cold sore) sufferers are advised to consult a nutritionist before taking this product. Also important for male health, especially health sperm formation