This content is for informational purposes only and does not constitute medical advice. Consult your healthcare provider before starting any supplement. Full disclaimer
| Form | Bioavailability | Best For |
|---|---|---|
| Standardized OPC Extract (95%) | High | Most potent — standardized to 95% OPCs; the form used in most clinical trials |
| Whole Grape Seed Extract | Moderate | Broader spectrum — contains additional polyphenols beyond OPCs; lower concentration |
| Grape Seed Oil | Low (for OPCs) | Cooking/topical — rich in linoleic acid but contains minimal OPCs; not suitable for cardiovascular supplementation |
Bioavailability: High. Best for: Most potent — standardized to 95% OPCs; the form used in most clinical trials.
Bioavailability: Moderate. Best for: Broader spectrum — contains additional polyphenols beyond OPCs; lower concentration.
Bioavailability: Low (for OPCs). Best for: Cooking/topical — rich in linoleic acid but contains minimal OPCs; not suitable for cardiovascular supplementation.