Grape seed extract is a source of oligomeric proanthocyanidin complexes (OPCs), which are antioxidant compounds. OPCs are also found in pine bark extracts, such as Pycnogenol.
Several small clinical trials suggest grape seed extract may have modest benefits for venous insufficiency and may slightly decrease blood pressure in people with pre-hypertension or who are overweight. For details, and information about the safety of grape seed extract, sign in and read the full answer >>
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