Bilberry Extract
Also known as: Vaccinium myrtillus, European bilberry, wild bilberry, anthocyanin extract, SBE, FBE, EBE
Effective Dosage
240 mg daily (eye health); 3 g daily (gut/inflammation); dose varies by use case
What the Science Says
Bilberry extract comes from a wild European berry closely related to blueberries and is packed with plant pigments called anthocyanins, which act as antioxidants in the body. A 12-week double-blind trial found 240 mg daily improved eye muscle fatigue from screen use, and a clinical trial found a fermented form reduced wrinkle depth and improved skin firmness after 84 days. Preliminary research also suggests it may support cardiovascular health by reducing inflammatory particles in the blood after a heart attack, though this evidence is early-stage.
What It Doesn't Do
Won't cure or prevent eye disease — the research is only on screen-related eye strain, not conditions like macular degeneration or glaucoma. No proven weight loss effect on its own — one study used it in a multi-ingredient caffeine blend, so bilberry gets no solo credit. No solid human evidence yet for liver protection, muscle building, or mood improvement — those findings come from animal studies or very preliminary lab work. Not a cancer treatment or fertility booster — rat studies on chemotherapy protection do not translate directly to humans.
Evidence-Based Benefits
Bilberry extract contains anthocyanins with antioxidant and anti-inflammatory properties; a 12-week double-blind RCT (PMID: 32106548) found 240 mg/day improved ciliary muscle accommodation in people doing visual display terminal tasks. A clinical trial of fermented bilberry extract (PMID: 39064646) showed statistically significant improvements in skin wrinkle depth, firmness, elasticity, and antioxidant capacity over 84 days. An open-label cardiovascular study (PMID: 32846041) found bilberry extract supplementation after myocardial infarction reduced circulating pro-atherogenic microvesicles, suggesting potential endothelial benefits.
Weak EvidenceEffective at: 240 mg/day (eye health RCT); 3 g/day (ulcerative colitis trial); 200 mg/kg bw (animal studies — not directly translatable to humans)
Source: auto-research
Absorption & Bioavailability
Poor to Moderate — anthocyanins from bilberry have limited bioavailability in humans. Encapsulation with whey protein modestly improved short-term absorption; citrus pectin increased intestinal accessibility. Significant amounts are metabolized before reaching systemic circulation.
Red Flags to Watch For
- Most compelling benefits (liver, muscle, reproductive protection) come from animal studies only — human evidence is very limited
- Bilberry and blueberry extracts look nearly identical and are frequently adulterated or mislabeled — look for standardized anthocyanin content on the label
- The skin aging trial used a fermented form (FBE) — standard bilberry extract may not produce the same results
- Cardiovascular study was open-label (no placebo control), making results harder to trust
- Anthocyanin bioavailability is inherently low — delivery format (encapsulation, fermentation) significantly affects how much you actually absorb
Research Sources
- PubMed
- NIH DSLD
This information is for educational purposes only and is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Last updated: 2026-04-06