Overview
Anthocyanin-rich berry traditionally used for night vision and vascular support.
- Vaccinium myrtillus
- Standardized anthocyanins 25%
Mechanism of action
Anthocyanins regenerate rhodopsin and strengthen capillary integrity.
- · Anthocyanin antioxidant
Effects on the body
Organ system effects
Mild improvement in night vision claimed; data limited.
Evidence-based benefits
Improves capillary fragility
Moderate evidenceNight vision claims weakly supported
Limited evidencePotential side effects
- · Bilberry is generally well-tolerated at evidence-based doses
- · Mild GI discomfort (nausea, loose stools, or bloating) possible at higher intakes
- · Headache or transient fatigue reported by a small fraction of users
- · Allergic or hypersensitivity reaction (rash, itching, swelling)
- · Sleep disturbance if taken late in the day
- · Discontinue and seek medical advice if symptoms are severe, persistent, or include difficulty breathing
Drug interactions
Safety & non-supplemental interactions
Educational summary — always confirm with your clinician or pharmacist before starting, stopping, or combining with prescription therapy.
- ·Pregnant or breastfeeding (insufficient safety data)
- ·Children under 18 (unless directed by a clinician)
- ·Bleeding disorders
- ·Warfarin, DOACs, antiplatelets, NSAIDs (additive bleeding risk)
- ·Discuss stopping ≥2 weeks before scheduled surgery.
Supplement interactions
- Omega-3Anti-inflammatory cardiovascular synergy.
- CoQ10Supports mitochondrial energetics in cardiac tissue.
No specific avoidances listed.
Dosing & bioavailability
Where to buy
Affiliate links — we may earn a commission at no extra cost to you. Amazon code supplementsch-20 is auto-applied at checkout. We don't endorse specific brands; verify third-party testing (USP, NSF, Informed Sport) before purchase.
Third-party testedIndependently verified Bilberry — look for USP, NSF, or Informed Sport seals on the label for purity and dose accuracy.Bilberry third party tested NSF
CapsulesPre-measured Bilberry capsules — easiest for travel and consistent daily dosing without scoops or scales.Bilberry capsules
PowderBulk unflavored Bilberry powder — best cost-per-gram and flexible dosing for stacking or mixing into drinks.Bilberry powder unflavored
Best sellersMost-purchased Bilberry products on Amazon — a quick way to see what's reviewed widely before you commit.Bilberry best sellerScientific evidence9Show studiesHide studies
Bilberry anthocyanins and vision/eye fatigue
Kosehira M, et al.
8-week RCT of bilberry extract in VDT users.
Reduced eye-fatigue scores vs placebo.
PubMed: Bilberry — Improves capillary fragility
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PubMed: Bilberry — Night vision claims weakly supported
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PubMed: Bilberry — randomized controlled trial
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PubMed: Bilberry — meta-analysis
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PubMed: Bilberry — pharmacokinetics
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PubMed: Bilberry — safety adverse events
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PubMed: Bilberry — dose response
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Google Scholar: Bilberry — clinical evidence
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