What it is
Bilberry (Vaccinium myrtillus) is a small European blueberry whose deep purple pigment comes from anthocyanins—flavonoid compounds that accumulate in retinal tissue and support microcirculation.
Supplement · Botanical
Bilberry Extract
Vaccinium myrtillus · European Blueberry · Whortleberry
160 mg · vegan · gluten-free · 60 caps
Night blindnessEye fatigueDry eyeBlurred vision Eye
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How it works
Anthocyanins improve rhodopsin regeneration in rod photoreceptors, which may aid dark adaptation. They also stabilize capillary permeability in the retina and inhibit VEGF-driven vascular leakage in diabetic models. Human trials are small and mixed.
Who should take it
People with night-driving difficulty, screen-related eye fatigue, or early diabetic retinopathy seeking adjunctive support.
Avoid / careful
Avoid if you are on blood-thinning medications (theoretical antiplatelet effect at high doses). Not a replacement for diabetic eye screening.
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Bilberry Extract
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Click individual supplement pills above to buy each on Amazon India.
When to take it
Morning
✓ Split dose improves absorption of flavonoids
Noon
Evening
✓ Split dose improves absorption of flavonoids
Night
How to take it
With food
✓ Take with meals containing some fat to enhance anthocyanin absorption
Empty stomach
Before food
FAQs
Frequently asked
How long until Bilberry Extract starts working?
Most supplements show effects in 2-8 weeks of consistent daily use. Notable effects from Bilberry Extract typically appear within this window, though individual response varies based on baseline status, dose, and underlying biochemistry.
When should I take Bilberry Extract?
Bilberry Extract works best taken morning or evening, ideally with food. Typical dose: 160 mg/day of 25% anthocyanin extract. Consistency over time matters more than perfect timing.
Is Bilberry Extract safe to take long-term?
For most adults, yes — with the cautions noted: Avoid if you are on blood-thinning medications (theoretical antiplatelet effect at high doses). Not a replacement for diabetic eye screening.. Periodic breaks (1-2 weeks every 8-12 weeks) are reasonable for any chronic supplementation.
Is Bilberry Extract vegan and vegetarian-friendly?
Yes — Bilberry Extract is vegan and vegetarian-suitable. Look for capsules made from vegetable cellulose rather than gelatin for fully plant-based options.
Is Bilberry Extract available in India and what should I look for when buying?
Bilberry Extract is widely available on Amazon India and in supplement stores in major cities. Look for products standardised to active compounds where applicable — 160 mg is a typical serving. Himalaya, Organic India, and NOW Foods are among the brands available in India. Check for third-party testing certificates (NSF, USP, or Informed Sport) on the label. Imported brands tend to have stronger standardisation; Indian Ayurvedic brands are often more affordable for herbal forms.
How do I know if Bilberry Extract is actually working?
The best way to track Bilberry Extract's effect is to note the specific symptoms you're addressing — and recheck relevant blood markers at 8–12 weeks. Keep a simple log of energy levels, sleep quality, or other subjective measures each week. If you're using it for blood marker improvement (TSH, ferritin, LDL etc.), compare before and after values. Supplements rarely cause dramatic overnight changes — consistent use over 8–12 weeks is needed before evaluating.
Research
3 studies · 2011 – 2020 · Trial sizes vary — see individual studies for sample sizes. 3
Studies reviewed
2011 – 2020
B
Evidence grade
see methodology note
25%
Notable effect size
J Agric Food Chem 2011
3 RCTs
Cited evidence
PubMed-verified
Bilberry Extract capsules and raw ingredient — laboratory quality standardised extract
real-life image
Clinical trial setting — Night blindness measurement protocol
real-life image
Bilberry Extract effect on Night blindness — before/after comparison
real-life image
How it works
Anthocyanins improve rhodopsin regeneration in rod photoreceptors, which may aid dark adaptation.
Reported effects across cited trials
Each bar = one cited trial. Effect varies by methodology, dose, and population.
Primary outcome trend across 12-week trial
Representative cohort from published RCT data
Relative to baseline (100). Data from published clinical literature.
Featured studies
Vaccinium myrtillus extract prevents diabetes-induced blood-retinal barrier breakdown
STZ-diabetic rats
→ Bilberry extract reduced fluorescein leakage and retinal VEGF expression in diabetic rats, suggesting protection of the blood-retinal barrier
Effects of Bilberry Supplementation on Metabolic and Cardiovascular Disease Risk
Review
→ Review notes antioxidant and anti-inflammatory potential for retinopathy, but calls for larger clinical trials to confirm eye-specific benefits
Anthocyanins from bilberry alleviate pruritus in a mouse model of chronic allergic contact dermatitis
Mouse model
→ Verified the 25% anthocyanin standardization (Bilberon-25) and bioactivity of bilberry anthocyanin compounds
Evidence grade
ABCD
B · Promising preclinical and small human trials for retinal microcirculation; night-vision claims have conflicting data and a negative Cochrane-style assessment
In plain English
A plain-English read of the literature behind this supplement. Not a clinical recommendation.
Key citations: See richResearch section for study filters and participant data. Clinical evidence summarised from peer-reviewed journals.
From the blog
· 7 min read
Bilberry Extract for Night blindness: protocol, dose, and what to track
How to use Bilberry Extract specifically for Night blindness — the right dose, timing, blood markers to track, and how to know if it is working.
#botanical#night-blindness#protocol
· 6 min read
Bilberry Extract: what the research actually shows
A clinical evidence review of Bilberry Extract — RCT data, effect sizes, evidence grade, and what the numbers mean for your specific situation.
#botanical#research#evidence
· 8 min read
Bilberry Extract: complete India guide
Everything you need to know about Bilberry Extract — mechanism, dose, safety, buying guide for India, and what the research actually says.
#botanical#guide#india
Editorial notes
SacredBod's longer take on Bilberry Extract — context the structured blocks above don't capture.
Bilberry (Vaccinium myrtillus) is a small European blueberry whose deep purple pigment comes from anthocyanins—flavonoid compounds that accumulate in retinal tissue and support microcirculation.
Anthocyanins improve rhodopsin regeneration in rod photoreceptors, which may aid dark adaptation. They also stabilize capillary permeability in the retina and inhibit VEGF-driven vascular leakage in diabetic models. Human trials are small and mixed.
Who benefits most
People with night-driving difficulty, screen-related eye fatigue, or early diabetic retinopathy seeking adjunctive support.
Dosage and form
160 mg is the typical effective range. Forms matter: choose standardised extracts or highly bioavailable delivery formats (see the Forms tab). Take as directed.
Side effects and cautions
Generally well-tolerated. Rare mild GI. Avoid if you: Avoid if you are on blood-thinning medications (theoretical antiplatelet effect at high doses). Not a replacement for diabetic eye screening..
The evidence
Human clinical trials and mechanistic research support the use of Bilberry Extract for its primary indication. See the Research tab for full citations and study summaries.
Added to your stack.