Bilberry
Content by: OpenSupplement Editorial Team | Medical review: pending | Last updated: April 13, 2026
TL;DR
European blueberry extract standardized to 25% anthocyanins
Small trials show improved retinal function in early macular degeneration
Rich in antioxidant anthocyanins that cross blood-retinal barrier
Very well-tolerated with excellent safety profile
Monthly cost: $12-20 for standardized extract
Best for: early eye health support, digital eye strain
What it is
Bilberry (Vaccinium myrtillus) is the European cousin of the North American blueberry, traditionally used for eye complaints across Scandinavia and Northern Europe. The supplement uses standardized extracts concentrated to 25% anthocyanins — the purple pigments responsible for bilberry's deep color and biological activity.
The famous WWII story about RAF pilots eating bilberry jam for better night vision is largely apocryphal, but it sparked decades of research into bilberry's eye health potential. Unlike many folk remedies, bilberry has accumulated a modest but consistent body of evidence for retinal support, though the effects are generally subtle and the research base remains limited compared to more established interventions.
What the research says
Early-Stage Support Several small trials suggest bilberry extract can improve certain measures of retinal function and visual performance in people with early macular degeneration [1]. The Piccardi study showed improvements in retinal sensitivity and contrast sensitivity over 6 months of supplementation. However, these studies are small and the effects modest.
Mechanism and Limitations Bilberry's anthocyanins cross the blood-retinal barrier and may protect against oxidative damage to retinal cells [2]. The anti-inflammatory effects could theoretically slow progression of early AMD. However, a systematic review by Canter found limited high-quality evidence for vision benefits overall [2].
Practical Recommendation Bilberry may serve as adjunctive support for early eye health, but shouldn't replace proven interventions like AREDS2 vitamins for established AMD. Best viewed as general antioxidant support rather than primary treatment.
Theoretical Relevance Only Bilberry's relevance to hearing loss is purely theoretical, based on anthocyanins' antioxidant properties and potential to protect delicate cochlear hair cells from oxidative damage. No published studies have specifically tested bilberry for hearing protection or age-related hearing loss.
Missing Evidence While antioxidants may theoretically benefit cochlear health, this remains unproven for bilberry specifically. The dosing and duration needed for potential hearing benefits are completely unknown.
Practical Recommendation Not recommended specifically for hearing loss given the complete lack of direct evidence. Those interested in antioxidant support for hearing might consider supplements with actual hearing research like NAC or magnesium.
DISCLAIMER: The information on this page is for educational purposes only and has not been evaluated by the Food and Drug Administration. This content is not intended to diagnose, treat, cure, or prevent any disease. Consult a qualified healthcare professional before using any dietary supplement, especially if you are pregnant, nursing, taking medication, or have a medical condition.
This page may contain affiliate links. If you purchase through these links, we may earn a small commission at no extra cost to you. Learn more.
Bilberry on Amazon
Safety
Bilberry has an excellent safety profile with centuries of traditional use as food and medicine. Even concentrated extracts are very well-tolerated, with side effects limited to occasional mild digestive upset at higher doses. No serious adverse events have been reported in clinical trials.
Interactions
Anticoagulants (minor to moderate) - Bilberry's anthocyanins have mild antiplatelet effects that could theoretically enhance blood-thinning medications like warfarin or aspirin. Monitor for increased bleeding risk with concurrent use.
Dosing
For Eye Health: 80-160 mg standardized extract (25% anthocyanins) twice daily with meals. Some studies used up to 480 mg daily divided into 2-3 doses.
Extract Standardization: Look for extracts standardized to 25% anthocyanins rather than whole fruit powders. Take with food to improve absorption of fat-soluble anthocyanins.
Cost
Expect to pay $12-20 monthly for quality standardized bilberry extract. Generic brands are widely available and generally reliable since bilberry extraction is well-established. European brands may cost slightly more but aren't necessarily superior to domestic options.
The bottom line
Bilberry is a safe, traditional botanical with modest evidence for eye health support. It's not a magic bullet for vision problems, but may provide gentle antioxidant support for those concerned about early eye aging or digital eye strain. Don't expect dramatic improvements, but it's reasonable as part of a broader eye health strategy for those wanting natural options.
References
- Kalt W, Hanneken A, Milbury P, Tremblay F. Recent research on the health benefits of blueberries and their anthocyanins. Adv Nutr. 2020;11(2):224-236.
- Canter PH, Ernst E. Anthocyanosides of Vaccinium myrtillus (bilberry) for night vision--a systematic review of placebo-controlled trials. Surv Ophthalmol. 2004;49(1):38-50.
Sources for this page include published meta-analyses, systematic reviews, and NIH dietary supplement fact sheets. All claims reflect the evidence as of early 2026.
This is not medical advice. Consult your healthcare provider before starting any supplement, especially if you take medications.