Enjoy the wide range of health benefits associated with OPCs with Terry Naturally® Clinical OPC® Extra Strength. OPCs support a variety of functions in the body, including liver, heart and immune system health. Terry Naturally uses OPCs derived from French Grape Seed Extract VX1. Contains no sugar, salt, yeast, wheat, gluten, corn, soy, dairy products, artificial coloring, artificial flavoring or artificial preservatives.