Proanthocyanidins (OPCs) from grape seeds are potent antioxidants and endothelial protectors. French Paradox partially explained by wine polyphenols. MegaNatural-BP® reduced BP by 8/5 mmHg in 300mg/day study. Standardize to OPC content. --- *Reviewed by the Dose AI Research Team and Clinical Advisory Board* *Last updated: 2026-04-06*
Reviewed by the Scan Dose Research Team and Clinical Advisory Board | Last updated:
Not medical advice. Based on published clinical research and systematic reviews.