General Dosage
160-480 mg standardized extract daily (25-36% anthocyanins)
Maximum dose: 600 mg/day of standardized extract; higher doses not well studied
Bilberry Dosage Guide
This content is for informational purposes only and does not constitute medical advice. Consult your healthcare provider before starting any supplement. Full disclaimer
Dosage Recommendations
General recommendation: 160-480 mg standardized extract daily (25-36% anthocyanins)
Timing: Can be taken any time of day; split dosing (twice daily) may be preferable • Take with food for best absorption.
Dosage by Condition
| Condition | Recommended Dose | Evidence |
|---|---|---|
| Eye fatigue / screen strain | 480 mg standardized extract daily | Moderate |
| General eye health | 160-320 mg daily | Moderate |
| Retinal support | 320-480 mg daily | Emerging |
Upper limit: 600 mg/day of standardized extract; higher doses not well studied
Timing & Absorption
Can be taken any time of day; split dosing (twice daily) may be preferable
Best taken with food for optimal absorption.
References
- Ozawa Y, Kawashima M, Inoue S, et al. (2015). Bilberry extract supplementation for preventing eye fatigue in video display terminal workers. Journal of Nutrition, Health and Aging. DOI PubMed
- Canter PH, Ernst E (2004). Anthocyanosides of Vaccinium myrtillus (bilberry) for night vision — a systematic review of placebo-controlled trials. Survey of Ophthalmology. DOI PubMed
- Kalt W, Cassidy A, Howard LR, et al. (2020). Recent Research on the Health Benefits of Blueberries and Their Anthocyanins. Advances in Nutrition. DOI PubMed