The proanthocyanidins are one of the most beneficial groups of plant flavonoids. The most active proanthocyanidins are those bound to other proanthocyanidins. Collectively, mixtures of proanthocyanidin dimers, trimers, tetramers and larger molecules are referred to as oligomeric proanthocyanidins or OPCs for short.
Extracts of OPCs have demonstrated a wide range of activity:
Grapeseed extract contains the gallic esters of proanthocyanidins, the most active OPC antioxidant, unlike pine bark extract which does not. Grapeseed extract is also more economical and creates less impact environmentally as only the fruit is harvested.
| Oligomeric Proanthocyanidins (OPC) | 100 | mg |
| from Grapeseed Extract (Vitis vinifera) |
| *This statement has not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease. |