Magazine
OPC: benefits and limits of grape seed extract
This overview of ‘OPC: benefits and limits of grape seed extract’ puts common health claims...
Read more
OPC Effects: What Grape-Seed Studies Show and Labels Leave Unanswered
OPC refers to a group of proanthocyanidins, not one uniform active ingredient. Grape-seed extracts have...
Read more
OPC: Grape Seed Extract, Blood Pressure and Evidence Limits
OPC from grape seed extract is marketed as an antioxidant. Human studies show small effects...
Read more