Bilberry

Bilberry is a credible anthocyanin source, but eye-health claims are often overstated relative to the clinical data.

A rough internal score reflecting quantity, quality, and consistency of human evidence. Not a clinical recommendation.

Human studies support improved oxidative-stress and vascular markers, while evidence for night vision is weak. Extract quality and anthocyanin standardization matter a lot.

• Provides anthocyanins with antioxidant activity
• May support microvascular function
• Sometimes reduces subjective eye strain

Standardized extracts typically provide 80-320 mg/day standardized to anthocyanins.

• GI upset
• Rare headache
• Possible interaction with blood thinners

May slightly increase bleeding risk with anticoagulants and can lower blood glucose modestly in sensitive people.

Most human studies are small, short, or use standardized extracts rather than the raw herb.

• Longevity25
• Recovery15