ByDr. Brennan Commerford, D.C.·Last reviewed: July 2026
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Grape (Vitis vinifera) Seed Extract: verification pending

We’re confirming the science for this compound before we publish a form ranking. Our team reviews every ranked page against peer-reviewed absorption data — this one is still under review, so we are not showing a score yet.

Check back soon. Rankings are reviewed by Dr. Brennan Commerford, D.C.

References

  1. Unraveling the parahormetic mechanism underlying the health-protecting effects of grapeseed procyanidins. PubMed
  2. Optimization of Catechin and Proanthocyanidin Recovery from Grape Seeds Using Microwave-Assisted Extraction. PubMed
  3. The effect of obesity and repeated exposure on pharmacokinetic response to grape polyphenols in humans. PubMed
  4. Plasma bioavailability and regional brain distribution of polyphenols from apple/grape seed and bilberry extracts in a young swine model. PubMed

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.