Grape seed extract is a natural plant constituent (polyphenols, including flavanols proanthocyanidin, also known as OPC). Our version of grapeseed extract. We de-fat the grapeseeds after pressing the oil, and then mill the presscake into powder. Our grape seed powder is rich in antioxidants (which adds shelf life) high in calcium and potassium, high in dietary insoluble fiber, low in carbs and is naturally GLUTEN FREE, sodium free with a high ORAC value!