What the NIH says about the evidence
- NCCIH says bilberry has not been clearly shown to help any health condition.
- Studies on night vision gave mixed results, and many were poor quality. The most careful studies did not find that bilberry improves night vision in healthy people.
Safety
- The fruit is considered safe in the amounts found in food. Fruit extracts have been used in studies for up to six months.
- Bilberry leaves may be unsafe in high doses or over long periods.
- If you take any medicine, talk with your doctor first. Some herbs and medicines interact.
Please note: this page is general information, not medical advice. Ask your doctor what is right for you, especially if you have a health condition or take medicine.
