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Dietary supplement

Bilberry Extract 1,200 mg Ingredients & Drug Interactions

by Herbal Secrets

Bilberry Extract 1,200 mg label
See full label image
Capsule Category: Botanical
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 16, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Bilberry Extract 1,200 mg against your medications. The heart of this page is the interaction checker and the full interaction report — how this product’s ingredients may interact with prescription and over-the-counter medicines you may be taking.

Around that, we add a pharmacist’s high-level view of the product as a whole — what’s inside, the evidence for its stated use, how transparent the label is, and what safety data exists — so you can see the full picture in one place. It’s educational information from our licensed clinical databases and the clinical staff at HelloPharmacist — not medical advice — and we don’t sell or endorse products. Our editorial policy

The interaction bottom line Most serious interaction: Moderate

Bilberry Extract 1,200 mg is a dietary supplement by Herbal Secrets with 1 active ingredient. Its ingredients are commonly taken for eye and vision health, antioxidant support, diarrhea and digestive upset.Based on those ingredients, 275 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Swedish Bilberry. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against Bilberry Extract 1,200 mg by Herbal Secrets

Ask about any prescription or over-the-counter medication and we check it for interactions with Bilberry Extract 1,200 mg by Herbal Secrets — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Bilberry Extract 1,200 mg by Herbal Secrets

Our pharmacy team’s full take, with four database checks built into the cards below — a summary of what is known, not a grade of the product itself.

From our pharmacy team — supplement deep dive

Generated from HelloPharmacist’s pharmacist-curated databases and editorial rules · Last generated Jul 16, 2026

What’s inside

Full disclosure
Ingredient Transparency · database check
Full

Every active ingredient lists its own amount on the label.

Why this rating?
  • The label discloses an exact amount for 1 of its 1 active ingredient.
  • “Swedish Bilberry” is listed as a grouped ingredient — the label gives one combined amount (1,200 mg) without saying how much of each component you get.

This product contains one active ingredient: Swedish Bilberry Fruit Extract at 1,200 mg per capsule. Bilberries are a dark blue berry rich in anthocyanidins, compounds that give them their color and are thought to account for most of their effects in the body.

The capsule itself is made from gelatin, silica, and stearate — inert ingredients that hold the extract together and help it dissolve in your digestive tract.

Does it work?

Not established
Evidence for Intended Use · database check
By FDA rules, dietary supplements can’t claim to treat, cure, or prevent disease — so labels speak in careful marketing language. We discern each product’s intended use from its name, label claims, and label statements, then grade the clinical evidence for that use. How these ratings are computed
Not established

The graded evidence we hold for these ingredients covers different conditions than the ones this product is marketed for, so there's no established rating for its stated use — see Bilberry's own graded uses on its monograph.

Why this rating?
  • The label markets this product for: eye health and healthy visual function.
  • We looked for evidence on: Age-related macular degeneration (AMD), Asthenopia (eye strain), Cataracts, Diabetic retinopathy, Dry eye, Glaucoma — and 3 related terms.
  • The closest evidence on file: Bilberry is rated "Possibly Ineffective" for Night vision (Natural Medicines).
  • Also on file: Bilberry is rated "Insufficient Reliable Evidence To Rate" for Age-related macular degeneration (AMD), Cataracts, Diabetic retinopathy, Dry eye, and more.

The evidence for bilberry extract is limited. Night vision is rated possibly ineffective — meaning research doesn't support a real benefit.

For age-related cognitive decline, age-related macular degeneration (AMD), atherosclerosis, high cholesterol (hyperlipidemia), and chronic venous insufficiency (CVI), we don't have enough reliable evidence to rate the product one way or the other. If you're considering it for one of these uses, the data we hold isn't established enough to predict whether it will help you.

The evidence, ingredient by ingredient Bilberry

How safe is it?

Well-documented data
Safety Information · database check
Well characterized

Adverse-effect, pregnancy, and general safety data are on file for most of these ingredients.

Why this rating?
  • We hold adverse-effect (side-effect) data for 1 of the 1 matched ingredient.
  • Pregnancy & breastfeeding safety ratings cover 1 of 1.
  • General safety write-ups exist for 1 of 1.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Bilberry fruit in food amounts is generally considered safe, but supplement safety data is limited and long-term effects aren't well studied. The most common side effects from the extract are dark-colored stools, flatulence, and mild stomach discomfort.

In one small study, about a third of patients reported flatulence; in another, temporary GI effects showed up in 13% of participants. The extract may also stain your stools and tongue dark blue or black — in one study, 50% of people taking bilberry extract 700 mg twice daily for 4 weeks saw dark green stools.

Bilberry is rated likely safe in pregnancy and breastfeeding, but because long-term supplement safety isn't established, talk with your doctor or pharmacist before using it during these times if you have specific concerns.

Side effects, ingredient by ingredient Bilberry

Meds to double-check

Moderate interaction found
Known Interaction Concern · database check
Moderate identified

The most serious documented interaction for these ingredients is Moderate. Check your medications for a personalized result.

Why this rating?
  • 1 of the 1 matched ingredient can interact with medications — Bilberry.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs; diabetes medications.
  • For scale: 275 individual medications appear in the full list. A big number alone doesn't make a product dangerous — what matters is whether YOUR medication is on it, so run yours through the interaction checker on this page.

Before taking this product, check with your doctor or pharmacist if you take blood thinners or antiplatelet drugs (like warfarin, aspirin, or clopidogrel) — bilberry may increase bleeding risk. Also flag diabetes medications, drugs broken down by CYP2E1 enzyme, and erlotinib (Tarceva).

These are the medication types documented to interact with bilberry extract.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with no established evidence rating for its marketed use. Moderate medication interactions have been identified, and safety information is well characterized.

Bilberry extract may be worth considering if you're interested in its traditional uses, but evidence for most conditions is weak or absent. The real caution here is medication interactions — especially with blood thinners, diabetes drugs, and certain cancer medications.

If you take any prescription drugs, check them against the search tool on this page before you start, and talk it over with your doctor or pharmacist to make sure it's safe for you.

Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI

Assessment coverage: 1 of 1 active ingredient matched to our full ingredient reviews (monographs). Based on the product label dated Mar 22, 2023.

This Scorecard evaluates available label information, ingredient evidence, and known medication-safety considerations. It does not independently verify product identity, purity, potency, contamination, or manufacturing quality. How these ratings are computed

At a glance

General information

Key facts about Bilberry Extract 1,200 mg, straight from the product label.

Brand Herbal Secrets
Barcode (UPC) 819209020739
Net contents 120 Capsule(s)
Market status On market
Date entered into DSLD Mar 22, 2023
DSLD ID 282807
Product type Botanical
Supplement form Capsule
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years), Gluten Free, Dairy Free, Sugar Free
From the label
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.

Supplement Facts

The label details for Bilberry Extract 1,200 mg by Herbal Secrets, sourced from the NIH Dietary Supplement Label Database.

Supplement Facts

Daily Value (DV) Target Group(s):
Adults and children 4 or more years of age
Minimum serving Sizes:
1 Capsule(s)
Maximum serving Sizes:
1 Capsule(s)
Servings per container
120
UPC/BARCODE
819209020739
IngredientAmount% DV
Swedish Bilberry Fruit Extract300 mg--
Swedish Bilberry1200 mg--

Other ingredients: Gelatin, Silica, Stearate

Tap any ingredient to jump to its full detail below.

Label statements
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
Formula

Herbal Secrets Bilberry provides the equivalent of 1,200 mg of Bilberry in each capsule. The anthocyanin pigments of Bilberries play a key role in maintaining eye health and healthy visual function. Bilberry is also known to support healthy blood circulation.

Bilberry Extract 4:1 Extract

Suggested/Recommended/Usage/Directions

Suggested use: As a dietary supplement, adults take one (1) capsule once or twice daily, preferably with a meal or as directed by a health care professional.

Precautions

Caution: If you are pregnant, nursing or taking any medication(s), consult your doctor before use.

Discontinue use and consult your doctor if any adverse reactions occur.

Keep out of reach of children.

Do not use if safety seal is damaged or missing.

FDA Disclaimer Statement

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.

General Statements

Visit us online @ amazingnutrition.com

Vitamin Angels Proud supporter

Formulation

100% natural

Helps to improve eye health Supports healthy visual function Promotes health circulation

Contains no: Artificial preservatives, colors, flavors or sweeteners, sugar, starch, milk, lactose, soy, gluten, wheat or sodium.

Herbal Secrets An FDA regulated facility

Seals/Symbols

Made in the USA

Good Manufacturing Practice GMP Quality Product

FDA Statement of Identity

Natural Dietary Supplement

Storage

Store in a cool, dry place.

Is this label outdated? Report a formula or label change and our pharmacy team will review it.

See for yourself

Bilberry Extract 1,200 mg by Herbal Secrets label

The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.

Bilberry Extract 1,200 mg label

Label images are published by the NIH Dietary Supplement Label Database for the version of this product on file. Always read your actual product label.

View the full label (PDF)
What’s inside

The Ingredients in Bilberry Extract 1,200 mg by Herbal Secrets

This is the 1 active ingredient this product is made of. Select it to open its full monograph.

Serving size1 Capsule(s) Dosage formCapsule Servings per container120 Amounts shown are per serving.

Swedish Bilberry

Interacts with
275 drugs
1200 mg per serving

Bilberry is a blueberry-like fruit rich in antioxidant plant compounds called anthocyanins, and it has a long history of traditional use for eye healt...

Swedish Bilberry monograph & interactions

Other (inactive) ingredients: Gelatin, Silica, Stearate. These complete the product’s ingredient list but are not active constituents.

Interaction report

Bilberry Extract 1,200 mg by Herbal Secrets Drug Interactions

Want to check YOUR meds against Bilberry Extract 1,200 mg?

Ask about interactions with your drugs in plain English — “Can I take it with lisinopril?” — and we find you the answer in seconds, ingredient by ingredient.

 Go to the checker
275Drugs
275 Moderate

Ingredients driving the most interactions

Swedish Bilberry 275

Individual Drug Interactions

The ingredients in Bilberry Extract 1,200 mg interact with 275 drugs. Click any drug to see the details.

1 of the 1 ingredient in Bilberry Extract 1,200 mg interact with drugs. Each result below shows which ingredient is responsible. Swedish Bilberry

Each ingredient & the kinds of drugs it affects

For each ingredient in Bilberry Extract 1,200 mg with known interactions, here are the types of medications it can affect. Open any type for the detail — or search your exact drug in the checker above.

Swedish Bilberry4 drug types · 275 drugs

Anticoagulant/Antiplatelet Drugs

Theoretically, bilberry fruit extract might increase the risk of bleeding when taken with anticoagulant or antiplatelet drugs.
In vitro, animal, and clinical research suggest that anthocyanidin extracts from bilberry can inhibit platelet aggregation.

Likelihood Possible Evidence D
Antidiabetes Drugs

Theoretically, bilberry leaf or fruit extract may increase the risk of hypoglycemia when taken with antidiabetes drugs.
Animal research suggests that bilberry leaf extract might have blood glucose-lowering activity. Also, one small clinical trial in patients with type 2 diabetes shows that taking bilberry fruit extract 470 mg as a single dose prior to an oral glucose tolerance test lowers plasma glucose levels when compared with placebo.

Likelihood Possible Evidence D
Cytochrome P450 2E1 (Cyp2E1) Substrates

Theoretically, bilberry fruit extract might decrease levels of drugs metabolized by CYP2E1.
Animal research shows that exposure to small concentrations of bilberry extract in drinking water for around one month increased CYP2E1 activity by 31%. However, exposure over a 2-month period did not increase CYP2E1 activity. This effect has not been reported in humans.

Likelihood Possible Evidence D
Erlotinib (Tarceva)

Theoretically, bilberry fruit extract might reduce the efficacy of erlotinib.
In vitro research suggests that bilberry fruit extract and its constituents, delphinidin and delphinidin-3-O-glucoside, inhibit the activity of erlotinib. This interaction has not been reported in humans.

Likelihood Possible Evidence D
Swedish Bilberry full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Bilberry Extract 1,200 mg, from the product label.

Herbal Secrets

See all Herbal Secrets products
Name
Herbal Secrets
Street Address
629 Grove Street
City
Jersey City
State
NJ
ZipCode
07310
Web Address
amazingnutrition.com
Pharmacist Counseling Corner

Bilberry Extract 1,200 mg by Herbal Secrets: Common Questions

Does Bilberry Extract 1,200 mg by Herbal Secrets interact with any medications?
Yes. Based on its ingredients, Bilberry Extract 1,200 mg has a known interaction with 275 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Bilberry Extract 1,200 mg contains a single active ingredient, and that one ingredient can interact with many different medications on its own. We check it against each medication and show the mechanism responsible.
Where does this information come from?
The product label data comes from the NIH Dietary Supplement Label Database (DSLD); the interaction data is built on the Natural Medicines database and reviewed by HelloPharmacist pharmacists.
Does bilberry actually help your eyesight?
Night vision is rated possibly ineffective based on the evidence we hold, so we can't say it works for that. For other eye conditions like age-related macular degeneration, there simply isn't enough reliable research to know either way.
What are the side effects I should expect?
Most people tolerate bilberry well. The most common side effects are dark stools, gas, and mild stomach upset. Your stools and tongue may turn dark blue or black — that's harmless but worth knowing about. In the small studies we have, these effects were temporary.
Is bilberry safe during pregnancy or breastfeeding?
Bilberry is rated likely safe in pregnancy and breastfeeding. That said, long-term safety data for supplements is limited, so if you're pregnant or nursing and have concerns about taking it, talk with your doctor or pharmacist for personalized advice.
How long do I need to take it to see results?
The product facts don't specify a timeline for results. Because evidence for effectiveness is weak or insufficient for most uses, it's hard to say whether you'll notice anything — check with your doctor about realistic expectations for what you're hoping it will do.
Can I take this with my diabetes medication?
Bilberry may lower blood sugar, so combining it with diabetes drugs creates a moderate risk of low blood sugar (hypoglycemia). Before you start, ask your doctor or pharmacist whether it's safe to add to your regimen, and whether your dose needs adjusting.

Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy

Not sure if Bilberry Extract 1,200 mg is safe with your meds?

Our pharmacists answer your medication & supplement questions — free.

Ask a pharmacist

Label information is sourced from the NIH Dietary Supplement Label Database and reflects the product version on file; always read your actual product label. This page is for education only and is not a substitute for professional medical advice. Confirm with your pharmacist or doctor before combining supplements and medications.

Bilberry Extract 1,200 mg label
Go deeper

The Full Monographs Behind Bilberry Extract 1,200 mg’s Ingredients

Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.

Herb & supplement monograph

Bilberry

Interacts with 275 drugs

Bilberry is a blueberry-like fruit rich in antioxidant plant compounds called anthocyanins, and it has a long history of traditional use for eye health, circulation, and mild diarrhea. While...

Read the full Bilberry monograph →
Sources

Sources & How We Checked

Bilberry Extract 1,200 mg's label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.

Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.

The 14 references behind this product’s interaction data

Every citation that drives the interaction findings for this product’s ingredients, from the evidence-graded Natural Medicines (TRC Healthcare) database. Open an ingredient to browse its citations — links open the study on PubMed or the publisher’s site.

Bilberry 14 references
  1. Cignarella A, Nastasi M, Cavalli E, Puglisi L. Novel lipid-lowering properties of Vaccinium myrtillus L. leaves, a traditional antidiabetic treatment, in several models of rat dyslipidaemia: a comparison with ciprofibrate. Thromb Res 1996;84:311-22. PubMed
  2. Morazzoni P, Magistretti MJ. Activity of Myrtocyan, an anthosyanoside complex from Vaccinium myrtillus (VMA), on platelet aggregation and adhesiveness. Fitoterapia 1990;61:13-21.
  3. Erlund, I., Koli, R., Alfthan, G., Marniemi, J., Puukka, P., Mustonen, P., Mattila, P., and Jula, A. Favorable effects of berry consumption on platelet function, blood pressure, and HDL cholesterol. Am J Clin Nutr 2008;87(2):323-331. PubMed
  4. Hawrelak, J. A. and Myers, S. P. Effects of two natural medicine formulations on irritable bowel syndrome symptoms: a pilot study. J Altern Complement Med 2010;16(10):1065-1071. PubMed
  5. Morazzoni P and Magistretti MJ. Effects of Vaccinium myrtillus anthocyanosides on prostacyclin-like activity in rat arterial issue. Fitoterapia 1986;57:11-14.
  6. Pulliero G, Montin S, Bettini V, and et al. Ex vivo study of the inhibitory effects of Vaccinium myrtillus anthocyanosides on human platelet aggregation. Fitoterapia 1989;60:69-75.
  7. Bottecchia D. Preliminary report on the inhibitory effect of vaccinium myrtillus anthocyanosides on platelet aggregation and clot retraction. Fitoterapia 1987;48:3-8.
  8. Fdez, M., Zaragoza, F., and Alvarez, P. In vitro platelet aggregation effects of anthocyanosides of vaccinium myrtilus L. Anales de la Real Academia de Farmacia 1983;49:79-90.
  9. Biedermann L, Mwinyi J, Scharl M, Frei P, Zeitz J, Kullak-Ublick GA, et al. Bilberry ingestion improves disease activity in mild to moderate ulcerative colitis-an open pilot study. 2013 May;7(4):271-9. PubMed
  10. Hoggard N, Cruickshank M, Moar KM, Bestwick C, Holst J, Russell W, et al. A single supplement of a standardized bilberry (Vaccinium myrtillus L.) extract (36% wet weight anthocyanins) modifies glycaemic response in individuals with type 2 diabetes control
  11. Aichinger G, Pahlke G, Nagel LJ, Berger W, Marko D. Bilberry extract, its major phenolic compounds, and soy isoflavone genistein antagonize the cytostatic drug erlotinib in human epithelial cells. Food Funct 2016;7(8):3628-36.
  12. Prokop J, Lněničková K, Cibicek N, et al. Effect of bilberry extract (Vaccinium myrtillus L.) on drug-metabolizing enzymes in rats. Food Chem Toxicol 2019;129:382-90. PubMed
  13. Chan SW, Chu TTW, Choi SW, Benzie IFF, Tomlinson B. Impact of short-term bilberry supplementation on glycemic control, cardiovascular disease risk factors, and antioxidant status in Chinese patients with type 2 diabetes. Phytother Res 2021. Online ahead o PubMed
  14. Bøhn SK, Myhrstad MCW, Thoresen M, et al. Bilberry/red grape juice decreases plasma biomarkers of inflammation and tissue damage in aged men with subjective memory impairment -a randomized clinical trial. BMC Nutr 2021;7(1):75. PubMed

See these in context on the Bilberry monograph →

Parts of this content are provided by the Therapeutic Research Center, LLC.

DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.

© 2021 Therapeutic Research Center, LLC

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