Sundown Naturals® L-Arginine 500mg Dietary Supplement Capsules. Helps maintain heart health*. Supports the effects of exercise*. No artificial color, flavor or sweetener, no preservatives, no sugar, no starch, no milk, no lactose, no soy, no gluten, no wheat, no yeast, no fish. Sodium free. Smart facts: L-Arginine is one of 20 amino acids, the building blocks of protein and is popular with body-builders and fitness enthusiasts.* L-Arginine can serve as an energy precursor and is one of the most important amino acids involved in supporting heart health.* Free of gluten & wheat. Laboratory tested. Guaranteed quality. Please recycle. Questions Call toll free 1-888-VITAHELP (848-2435) or visit us at www.sundownnaturals.com. ©2013.