I'm so happy to find this site! I found OPC-3 through a friend. OPC stands for Oligomeric Proanthocyanidins. They are some of the worlds most potent and abundant polyphenolic substances in the plant kingdom and an integral part of the human diet. OPC's in nutritional supplements are generally extracted from grape seeds or pine bark. Due to potent antioxidant activity, OPC's have been the subject of recent research, demonstrating anticarcinogenic, anti-inflammatory, antimicrobial, and vasodilatory properties, making them a potentially valuable therapeutic tool for the treatment of a a variety of conditions. Because they are produced in powder form, by the company I get them from, they are absorbed by the small intestine immediately. They are working miracles in my life. I had almost immediate results. OPC's have a scavenging affect on free radicals and an affinity to vascular tissue. I can help anyone interested in obtaining this product, get it.