oPC 3 contains a combination of oligomeric proanthocyanidins (OPC's) from sources that include grape seed, red wine and pine bark† extracts. The grape seed extract is the superior source of OPCs, containing 92% of active ingredients over pine bark's 84% of active OPC ingredients.The red wine extract contains flavonoids called leucocyanidins from the skin of red grapes. Leucocyanidins are bioflavonoids with powerful antioxidant properties crucial to their role in supporting the circulatory system OPC 3 also contains bilberry and citrus extracts, which are known to have effects of vision and histamine release, respectively.this powerful formula will be delivered to your system the way nature intended it to be - in an isotonic solution that maximizes absorption. OPC 3 has a pleasant natural grape flavor, is a vegetarian product, and mixes instantly when added to water. This product should be taken on an empty stomach for the fastest, most effective delivery of the active ingredient.oPC 3 contains a combination of oligomeric proanthocyanidins (OPC's) from sources that include grape seed, red wine and pine bark† extracts. The grape seed extract is the superior source of OPCs, containing 92% of active ingredients over pine bark's 84% of active OPC ingredients.The red wine extract contains flavonoids called leucocyanidins from the skin of red grapes. Leucocyanidins are bioflavonoids with powerful antioxidant properties crucial to their role in supporting the circulatory system OPC 3 also contains bilberry and citrus extracts, which are known to have effects of vision and histamine release, respectively.this powerful formula will be delivered to your system the way nature intended it to be - in an isotonic solution that maximizes absorption. OPC 3 has a pleasant natural grape flavor, is a vegetarian product, and mixes instantly when added to water. This product should be taken on an empty stomach for the fastest, most effective delivery of the active ingredient.oPC 3 contains a combination of oligomeric proanthocyanidins (OPC's) from sources that include grape seed, red wine and pine bark† extracts. The grape seed extract is the superior source of OPCs, containing 92% of active ingredients over pine bark's 84% of active OPC ingredients.The red wine extract contains flavonoids called leucocyanidins from the skin of red grapes. Leucocyanidins are bioflavonoids with powerful antioxidant properties crucial to their role in supporting the circulatory system OPC 3 also contains bilberry and citrus extracts, which are known to have effects of vision and histamine release, respectively.

bioflavonoids are complex organic plant compounds found mostly in fruits and vegetables. They function as a cofactor or helper to the body's immune system to respond to inflammation, allergy and infection.oPC's are known to stabilize and protect collagen (a major protein in the body) from free radical damage and enzymatic digestion.oPCXtra is totally bioavailable, water soluble and delivered in an isotonic solution, the way nature intended it to be. This product is delivered to the small intestines within five minutes, when taken as directed.oPCXtra is a super antioxidant drink mix made from a combination of six major sources of bioflavonoids. Four of the sources - Grape Seed Extract, Red Wine Extract, Pine Bark Extract and Green Tea Extract - supply a group of powerful antioxidant bioflavonoids called Oligomeric Proanthocyanidins (OPC).bioflavonoids are complex organic plant compounds found mostly in fruits and vegetables. They function as a cofactor or helper to the body's immune system to respond to inflammation, allergy and infection.