Grape seed extract is rich in proanthocyanidins, potent antioxidants. The extract in MemoFlow is standardized to over 95% proanthocyanidins.
Per NCCIH, grape seed extract has been studied for cardiovascular support and may modestly lower diastolic blood pressure. Its antioxidant activity is well documented. It is studied for circulation and heart health rather than memory directly.
Grape seed anchors the antioxidant and circulatory-support side of the formula.