500mg of High Quality L-Arginine Per Capsule</br>Essential Amino Acid</br>Serving Size: 1 Capsule</br>Non-GMO?? Gluten Free</br>Made in the USA</br></br>Product Description</br></br>L-Arginine is a conditionally essential basic amino acid involved primarily in urea metabolism and excretion. It is also believed to be beneficial for DNA synthesis.</br><br/>http://www.amazon.com/gp/product/B01CUWIURK