Supports muscle metabolism: L-Arginine supports muscle metabolism and is also necessary in the formation of nitric oxide, a compound involved in the circulatory system.Quality You Can Trust - Natural Amino Acids are the highest quality pharmaceutical grade products available.Local, Organic, and Non-GMO - Because Natural Factors Farms are certified organic, we don't pollute the land with pesticides and chemical fertilizers. We grow true non-hybrid species, non-transgenic seeds, including many open pollinated varieties. Local growth also helps reduce carbon emissions from foreign transportation and maintain jobs in the community.Just the right size: We think we need to be big enough to get it right. We are one of the only nutritional companies that have our own organic farms, our own extraction, encapsulation and production facilities, our own laboratories and research facilities. We are also one of the few Nutraceuticals brand manufacturers in North America to have our own soft gel encapsulation facility.Third Party Certified - Independently tested for GMOs and over 700 contaminants using advanced technology such as mass spectrometry to ensure purity and potency.L-arginine supports muscle metabolism and is also required in the formation of nitric oxide, a compound involved in the circulatory system. Natural Factors Amino Acids are the highest quality pharmaceuticals available.Safety information.These statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure, or prevent any disease.Ingredients.L-Arginine (HCL) (Pharmaceutical Grade), vegetarian capsule (carbohydrate gum [cellulose], purified water), rice powder, magnesium stearate (vegetable grade).Instructions.2 Capsule 1 to 3 times daily or as directed by a healthcare professional.