ByDr. Brennan Commerford, Chiropractic Physician·Last reviewed: April 2026
All Ingredients
Botanical1 form

Bilberry

Preferred Form
25% Anthocyanins
Bioavailability
S2
Evidence Level
Moderate Evidence

Quick Answer

What is the best form of Bilberry?

25% Anthocyanins is our top-ranked form of Bilberry, classified as T1 Preferred with S2 bioavailability. We compared 1 forms in our formulary.

Our recommendation: 25% Anthocyanins

1forms compared

All Forms of Bilberry

FormTierBioavailabilityDose RangeUnit
25% AnthocyaninsT1 PreferredS2

Bioavailability by Form

S2 — Good
25% Anthocyanins

What is Bilberry?

Bilberry is a Botanical supplement available in 1 form.

Not all forms of Bilberry are equal. The form you choose determines how much Bilberry actually reaches your tissues, and the difference between the best and worst forms can be substantial. This bilberry extract standardized to 25% anthocyanins provides the highest-potency concentration of the active flavonoid pigments responsible for bilberry's research-supported vision and vascular benefits. Standardized extracts ensure consistent anthocyanin delivery compared to unpurified bilberry preparations with variable pigment content.

Forms of Bilberry Compared

Bilberry (Vaccinium myrtillus) Fruit Extract (25% Anthocyanins) Preferred (T1 Preferred) has a bioavailability rating of good (S2). Typical dose range: not yet documented in our database.

What the Research Shows

Bilberry extract standardized to 25% anthocyanins provides concentrated bioactive polyphenols with particular affinity for retinal and vascular tissues. Research supports its use for macular health, night vision adaptation, and microcirculation support. The 25% anthocyanin standardization ensures clinically relevant doses of active compounds.

Anthocyanins from bilberry extract detected in plasma within 2h; rapid renal excretion PMID: 16053502
Bilberry anthocyanins bioavailable at low measurable levels; glycosylation affects absorption PMID: 22187940
Bilberry anthocyanin bioavailability <1% of dose; tissue distribution to retina confirmed PMID: 28608846

How to Choose the Right Form

Bilberry (Vaccinium myrtillus) Fruit Extract (25% Anthocyanins) is classified as T1 Preferred in the FormulaForge formulary — our top recommendation for Bilberry. It carries a bioavailability rating of good (S2), meaning more of the active compound reaches your tissues per dose unit compared to lower-tier forms.

When choosing a Bilberry supplement, look for the S1 (best absorption) bioavailability tier on the label or formulary listing. T1 Preferred forms have the strongest research-backed evidence for efficient absorption.

Other forms may be appropriate depending on individual goals, cost considerations, and your healthcare provider’s guidance. The best form for you depends on your specific health needs.

Dosing & Safety

For Bilberry (Vaccinium myrtillus) Fruit Extract (25% Anthocyanins), the typical dosing range is not yet documented in our database. Individual dose requirements vary based on health goals, body weight, and existing nutrient intake.

Side Effects: Specific side effect data for these forms is not yet documented in our database. In general, consult your healthcare provider regarding tolerability at higher doses.

These statements are based on structure/function research and have not been evaluated by the FDA. This information is not intended to diagnose, treat, cure, or prevent any disease. Always consult a qualified healthcare provider before starting or changing a supplement regimen.

The Science

The following studies and findings inform our formulary classifications for Bilberry:

Anthocyanins from bilberry extract detected in plasma within 2h; rapid renal excretion PMID: 16053502
Bilberry anthocyanins bioavailable at low measurable levels; glycosylation affects absorption PMID: 22187940
Bilberry anthocyanin bioavailability <1% of dose; tissue distribution to retina confirmed PMID: 28608846

Dosing Guidance

Dosing information not yet available for this ingredient.

Frequently Asked Questions

What is the best form of Bilberry?
Bilberry (Vaccinium myrtillus) Fruit Extract (25% Anthocyanins) is the T1 Preferred form of Bilberry in the FormulaForge formulary, reflecting research-backed evidence for superior bioavailability (good (S2)). This classification is based on published absorption studies and clinical evidence quality. The best form for you depends on your individual health goals and your healthcare provider's recommendations. Always consult a qualified healthcare provider before starting, stopping, or adjusting any supplement regimen.
How much Bilberry should I take daily?
Dosing information for Bilberry is being compiled in our database. Individual dose requirements vary based on health goals and existing nutrient intake. Always consult a qualified healthcare provider before starting, stopping, or adjusting any supplement regimen. These statements are based on structure/function research and have not been evaluated by the FDA. This information is not intended to diagnose, treat, cure, or prevent any disease.
What are the benefits of Bilberry?
Bilberry has been studied for its role in supporting: Supports healthy vision and macular health, Supports cardiovascular health via anthocyanin antioxidants, Supports healthy blood vessel integrity and microcirculation, Supports eye comfort during prolonged screen use. Bilberry extract standardized to 25% anthocyanins provides concentrated bioactive polyphenols with particular affinity for retinal and vascular tissues. Research supports its use for macular health, night vision adaptation, and microcirculation support. The 25% anthocyanin standardization ensures clinically relevant doses of active compounds. These statements are based on structure/function research and have not been evaluated by the FDA. This information is not intended to diagnose, treat, cure, or prevent any disease.
When is the best time to take Bilberry?
Optimal timing for Bilberry supplementation depends on the specific form, dosage, and individual factors. Some forms may be better absorbed with food; others may not require food. Always consult a qualified healthcare provider before starting, stopping, or adjusting any supplement regimen.
Are there side effects of taking Bilberry?
Tolerability of this Botanical supplement varies by individual, dose, and specific form. Some individuals may experience gastrointestinal discomfort at higher doses. Specific side effect profiles for each form of Bilberry are documented in our formulary where available. Always consult a qualified healthcare provider before starting, stopping, or adjusting any supplement regimen. These statements are based on structure/function research and have not been evaluated by the FDA. This information is not intended to diagnose, treat, cure, or prevent any disease.
What forms of Bilberry are available?
There are 1 form of Bilberry in our formulary: Bilberry (Vaccinium myrtillus) Fruit Extract (25% Anthocyanins) (T1 Preferred, bioavailability: good (S2)). Forms differ in chemical structure, bioavailability, and typical dose range. FormulaForge classifies forms by tier based on published bioavailability evidence.

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References

  1. Anthocyanins from bilberry extract detected in plasma within 2h; rapid renal excretion PubMed
  2. Bilberry anthocyanins bioavailable at low measurable levels; glycosylation affects absorption PubMed
  3. Bilberry anthocyanin bioavailability <1% of dose; tissue distribution to retina confirmed PubMed

FormulaForge formulates and sells supplements containing the ingredients discussed on this page. Our formulary recommendations are based on peer-reviewed bioavailability research. All cited studies are independently verifiable.