Sundown L-Arginine 500mg supports heart health and the effects of exercise. (2) L-Arginine plays an important role in nutrition and is one of the most important amino acids for supporting coronary blood flow and vascular function. (2) It is often used as a supplement by athletes. For adults, take two (2) L-Arginine capsules three (3) times daily, preferably with meals. At Sundown, we believe in living clean (1)…and being transparent. That’s why you won’t find genetically modified ingredients, gluten, dairy, or artificial flavors in any of our products. Choose Sundown for premium clean vitamins, without the premium price. (1) Contains 90 capsules.