Bilberry

Also known as vaccinium myrtillus, bilberry extract.

Last reviewed October 9, 2026 · Jump to references

What is Bilberry?

In plain words

Bilberry is a small, dark-blue berry related to the blueberry. The body breaks down its plant pigments, and gut bacteria help turn them into other compounds. Researchers study bilberry for eye health, blood flow, and blood sugar control. Human studies have not established clear benefits for these uses, and concentrated extracts are less well studied than the fruit.

Technical definition

Bilberry (Vaccinium myrtillus) is a botanical whose fruit contains anthocyanins, glycosylated polyphenolic pigments; extracts vary in composition and concentration. Its constituents and their metabolites may influence oxidative stress, inflammatory signaling, and vascular function through multiple pathways rather than a single established receptor target. Bilberry is sold as a food and dietary supplement, not an FDA-approved treatment for disease.

Educational information only. This page does not provide medical advice or determine whether a supplement is appropriate for you. Review supplements with a qualified healthcare professional, especially if you take medication, are pregnant, have surgery scheduled, or have a chronic medical condition.

Evidence by use

Each use is rated on its own. There is no single overall effectiveness score.