Dietary Supplement. Supports circulatory health. Nitric oxide stimulator. Gluten, wheat & dairy free. Suitable for vegetarians. Since 1947. Solgar's KOF-K certification No. K-1250. L-Arginine is an amino acid that promotes heart health. It stimulates nitric oxide, a compound involved in circulatory and immune function. Nitric oxide degrades very rapidly after its formation. L-Arginine serves as the precursor for continued nitric oxide production. This product provides free form L-Arginine to promote optimal absorption and assimilation. www.solgar.com. Free of: gluten, wheat, dairy, soy, yeast, sugar, sodium, artificial flavor, sweetener, preservatives and color. (These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.)