https://www.isotonicnow.com/Isotonix_OPC-3.html – Isotonix OPC-3 contains the highest quality ingredients to create the most effective and potent OPC product on the market. Oligomeric proanthocyanidins (OPCs) are bioflavonoids (complex organic plant compounds) found in fruits, vegetables and certain tree barks that provide exceptional nutritional benefits to the human body. The three best sources of OPCs available are in Market America’s OPC-3 grape seed extract, red wine extract and Pycnogenol; from pine bark. Helps maintain healthy circulation by strengthening capillaries, arteries and veins and supports cardiovascular health. For more information about Isotonix OPC-3