L-arginine Plus by Klērpäth. L-arginine Plus: Powder Supplement contains 5110mg L-arginine, 1010mg L-citrulline, as well as Vitamin B6, Vitamin B12, Vitamin D3, Vitamin C, Xylitol, Red Wine Extract and 72 trace minerals per serving. L-arginine Plus also contains Astragin which sets our product aside from all the competition! AstraGin is a 100% All Natural ingredient blend of two highly fractionated plant extracts, Panax notoginseng and Astragalus membranecous. This ingredient has been demonstrated to promote the absorption of amino acids up to 66%. When manufacturing L-arginine Plus, our company decided to use only the very best ingredients. We wanted to do more than make a similar product at a better price. We chose instead to make what we believe to be a superior product at a superior price. Because of that commitment, we buy only the highest-grade ingredients. Furthermore, we test the quality and potency of every ingredient that enters our facility. Klērpäth is here to help you get on a clear path to you fitness goals. Whatever they may be.