Grape seed extract is very similar to pine bark extract as it contains a unique type of bioflavonoids called proanthocyanidins, which are synergistic with vitamin C, that is they greatly enhance the activity of Vitamin C. In fact, some researchers believe that grape seed extract helps vitamin C enter cells, thus strengthening the cell membranes and protecting the cells from oxidative damage.

The use of Grape Seed Extract has been indicated for:

Anti-Inflammatory: To treat common ailments such as arthritis and allergies. Many bioflavonoids inhibit the release of certain enzymes that can promote inflammation. In the case of arthritis, free radical damage may also contribute to joint pain and swelling associated with this condition.

Circulation: As we age, cells lose collagen, a protein fibre that is important for the growth and repair of cells including capillary cells. Weakened capillaries can lead to easy bruising and a tendency to develop varicose veins. By protecting against free radical assault, grape seed extract may help prevent weakening of capillaries and enhance the performance of Vitamin C, which is indirectly involved in collagen production.

Heart Disease: Several studies have confirmed that antioxidants like grape seed extract can prevent the oxidation of blood lipids, such as low-density lipoprotein, or "bad" cholesterol, which can promote the formation of plaque or fatty deposits in the arteries.

Cancer Fighter: Grape seed extract is a potent antioxidant and free radical scavenger. Free radicals are unstable oxygen molecules that can attack the normal cell, destroying them or causing them to mutate. Free radical damage can also lead to the kind of unfettered cell growth associated with cancer. Vitamin C is a potent antioxidant in its own right, but studies suggest that it may be even more effective when combined with proanthocyanidins such as grape seed extract.