Seek labels that state exact standardization, such as 1.8% to 2.2% vitexin or 18-20% oligomeric procyanidins (OPCs) .

You can find hawthorn berry products through several reliable channels: Hawthorn Berry: Heart Health Benefits Explained

Avoid "berry-only" powders if you want full transparency; whole berries reduce the risk of ingredient adulteration. 2. Where to Buy