Nature's Bounty® L-Arginine 1000 mg. Supports blood flow & vascular function*. Amino acid supplement. Over 40 years of trusted quality. At Nature's Bounty, we are committed to your health. For over 40 years we have been making trusted products, backed by science, and made with only the purest ingredients... guaranteed. So you can get the most out of life every day. Supports heart health* Guaranteed quality. Laboratory tested. Non-GMO, no artificial color, no artificial flavor, no artificial sweetener, no preservatives, no sugar, no starch, no milk, no lactose, no soy, no gluten, no wheat, no yeast, no fish. Suitable for vegetarians. Nutrition questions or comments Call 1-800-433-2990 Mon. - Sat. 9 AM - 7 PM ET. Join our Loyalty Program at naturesbountyrewards.com. Made in the USA with select ingredients from around the world. ©2016 Nature's Bounty, Inc.