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Dietary supplement

Blueberry Ingredients & Drug Interactions

by Nature's Answer

Blueberry label
See full label image
Liquid Category: Botanical
Most serious interaction: Minor
Clinical methodology reviewed by · Updated Sep 9, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Blueberry 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: Minor

Blueberry is a dietary supplement by Nature's Answer with 1 active ingredient. Its ingredients are commonly taken for antioxidant support, heart health, brain and memory health.Based on those ingredients, 88 medications have a known interaction with it, the most serious rated minor. The ingredients most likely to interact are Blueberry (Vaccinium sp.) leaf extract. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against Blueberry by Nature's Answer

Ask about any prescription or over-the-counter medication and we check it for interactions with Blueberry by Nature's Answer — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Blueberry by Nature's Answer

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.
  • No proprietary blends here — you can verify the dose of every single component.

This product contains one active ingredient: blueberry (Vaccinium sp.) leaf extract. The extract is suspended in a base of purified water, vegetable glycerin, and certified organic alcohol (12–15%).

Does it work?

Couldn't assess
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 assessable

This is a single-ingredient Blueberry product and its label doesn't state a use — see Blueberry's own graded uses on its monograph.

Why this rating?
  • We looked at the product name, claims, and label statements and couldn't find a stated purpose to grade.

The data we hold shows blueberry is possibly ineffective for high blood pressure. For age-related cognitive decline, anxiety, athletic performance, and high cholesterol (hyperlipidemia), the evidence isn't established well enough to rate—we simply don't have reliable data yet.

For cardiovascular disease prevention, the same applies.

The evidence, ingredient by ingredient Blueberry

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.

Blueberries eaten as food are generally well tolerated, and this extract is no exception. The most common side effects from freeze-dried blueberry supplements are constipation, diarrhea, nausea, and vomiting—a small number of trial participants (about 26% in one study) stopped taking high-dose supplements due to stomach upset in the first week.

For pregnancy, the safety data advises caution: eating blueberries is fine, but concentrated supplements haven't been well studied in pregnancy. The same goes for breastfeeding—the safety of high-dose extracts while nursing is unknown.

Talk with your doctor or pharmacist about whether this product is right for you in these situations.

Side effects, ingredient by ingredient Blueberry

Meds to double-check

Minor interactions only
Known Interaction Concern · database check
Minor only

Only Minor-severity interactions are documented for these ingredients.

Why this rating?
  • 1 of the 1 matched ingredient can interact with medications — Blueberry.
  • The most serious interaction on file is rated Minor.
  • Some involve high-stakes drug classes: diabetes medications.
  • For scale: 88 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 you start, double-check this product with your doctor or pharmacist if you take antidiabetes drugs (due to the risk of low blood sugar), flurbiprofen (Ansaid), or buspirone (BuSpar). All three interactions are rated Minor, but they're important to confirm with your medications.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with no assessable stated purpose. Only minor medication interactions are documented, and safety information is well characterized.

Blueberry leaf extract is generally well tolerated as a supplement and is backed by food use over many years. It's not proven to help with high blood pressure, cognitive decline, anxiety, or cholesterol, and the evidence for other uses is lacking.

If you take antidiabetes drugs, flurbiprofen, buspirone, or any other prescription medication, check with your doctor or pharmacist before adding this product—the extract may affect how your body handles certain drugs.

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 Feb 25, 2019.

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 Blueberry, straight from the product label.

Brand Nature's Answer
Barcode (UPC) 083000001482
Net contents 1 fl. Oz.; 30 mL
Market status On market
Date entered into DSLD Feb 25, 2019
DSLD ID 191121
Product type Botanical
Supplement form Liquid
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years), Kosher, Gluten 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 Blueberry by Nature's Answer, 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 mL
Maximum serving Sizes:
2 mL
Servings per container
15
UPC/BARCODE
083000001482
IngredientAmount% DV
Blueberry (Vaccinium sp.) leaf extract450 mg--

Other ingredients: purified Water, Vegetable Glycerin, 12-15% certified organic Alcohol

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.
FDA Disclaimer Statement

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

Seals/Symbols

Gluten Free

K Parve

Bio-Chelated Cold Extraction Process

Formula

K Parve

Vaccinium sp. Made from 4,500mg Fresh Blueberry Leaves

Low Alcohol

General

9210 Rev. 10/17

General Statements

Since 1972 Promotes overall good health & wellbeing

Brand IP Statement(s)

Discover Nature's Answer

Our alcohol extracts are produced using our cold Bio-Chelated proprietary extraction process, yielding a Holistically Balanced Advanced Botanical Fingerprint extract in the same synergistic ratios as in the plant

2017 Nature's Answer

Formulation

Gluten Free

FDA Statement of Identity

Herbal Supplement

Suggested/Recommended/Usage/Directions

Suggested Use: As a dietary supplement take 1-2 mL (28-56 drops) three (3) times a day in a small amount of water. Shake well.

Precautions

Keep out of reach of children.

Warning: Do not use if pregnant or nursing

Do not use if safety seal is damaged or missing

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

See for yourself

Blueberry by Nature's Answer label

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

Blueberry 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 Blueberry by Nature's Answer

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

Serving size1 mL Dosage formLiquid Servings per container15 Amounts shown are per serving.

Blueberry (Vaccinium sp.) leaf extract

Interacts with
88 drugs
450 mg per serving

Blueberries are a nutritious fruit rich in antioxidants called anthocyanins, and eating them as part of a balanced diet is healthy and safe for most p...

Blueberry (Vaccinium sp.) leaf extract monograph & interactions

Other (inactive) ingredients: Purified Water, Vegetable Glycerin, 12-15% certified organic Alcohol. These complete the product’s ingredient list but are not active constituents.

Interaction report

Blueberry by Nature's Answer Drug Interactions

Want to check YOUR meds against Blueberry?

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
88Drugs
88 Minor

Ingredients driving the most interactions

Blueberry (Vaccinium sp.) leaf extract 88

Individual Drug Interactions

The ingredients in Blueberry interact with 88 drugs. Click any drug to see the details.

1 of the 1 ingredient in Blueberry interact with drugs. Each result below shows which ingredient is responsible. Blueberry (Vaccinium sp.) leaf extract

Each ingredient & the kinds of drugs it affects

For each ingredient in Blueberry 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.

Blueberry (Vaccinium sp.) leaf extract3 drug types · 88 drugs

Antidiabetes Drugs

Theoretically, blueberries or blueberry leaf extracts might increase the risk of hypoglycemia when taken with antidiabetes drugs.
Animal and in vitro research suggests that blueberry and/or blueberry leaf extracts can lower blood glucose levels.

Likelihood Unlikely Evidence D
Buspirone (Buspar)

Theoretically, blueberry juice might increase blood levels of buspirone.
In vitro research shows that blueberry juice can inhibit the metabolism of buspirone, possibly by inhibiting cytochrome P450 3A (CYP3A) enzymes. However, pharmacokinetic research in humans shows that drinking 300 mL of blueberry juice 30 minutes before taking buspirone hydrochloride 10 mg does not significantly affect the concentration or clearance of buspirone.

Likelihood Unlikely Evidence B
Flurbiprofen (Ansaid, Others)

Theoretically, blueberry juice might increase blood levels of flurbiprofen.
In vitro research shows that blueberry juice can inhibit the metabolism of flurbiprofen, possibly by inhibiting cytochrome P450 2C9 (CYP2C9) enzymes. However, pharmacokinetic research in humans shows that drinking 300 mL of blueberry juice 30 minutes before taking flurbiprofen 100 mg does not significantly affect the concentration or clearance of flurbiprofen.

Likelihood Unlikely Evidence B
Blueberry (Vaccinium sp.) leaf extract full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Blueberry, from the product label.

Nature's Answer

See all Nature's Answer products
Name
Nature's Answer
Street Address
85 Commerce Drive
City
Hauppauge
State
NY
ZipCode
11788
Phone Number
(800) 439-2324
Web Address
www.naturesanswer.com
Pharmacist Counseling Corner

Blueberry by Nature's Answer: Common Questions

Does Blueberry by Nature's Answer interact with any medications?
Yes. Based on its ingredients, Blueberry has a known interaction with 88 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Blueberry 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.
Will blueberry extract lower my blood sugar if I take diabetes medication?
Animal and lab research suggests blueberry extract can lower blood glucose, which theoretically could increase your risk of low blood sugar if combined with antidiabetes drugs. That's a Minor-severity interaction, so it's worth checking with your doctor or pharmacist before starting this product.
Is this safe to take while pregnant or breastfeeding?
Eating whole blueberries during pregnancy and breastfeeding is fine. However, concentrated supplements like this one haven't been well studied in pregnancy, and the safety of high-dose extracts while nursing is unknown. Talk with your doctor or pharmacist before taking this product in either situation.
What are the side effects?
Blueberry extract is generally well tolerated. The most common side effects are constipation, diarrhea, nausea, and vomiting—mostly reported with high-dose freeze-dried blueberry. In one study, about 26% of people taking a high dose stopped in the first week due to stomach upset.
Does blueberry help with high blood pressure?
According to the data we hold, blueberry is possibly ineffective for high blood pressure. For other uses like cognitive decline, anxiety, or cholesterol, the evidence isn't established well enough yet to say whether it works.
What's the alcohol content in this liquid?
This product is suspended in certified organic alcohol at 12–15% by volume, along with purified water and vegetable glycerin. If you need to avoid alcohol, this may not be the right choice for you.

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

Not sure if Blueberry is safe with your meds?

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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.

Blueberry label
Go deeper

The Full Monographs Behind Blueberry’s Ingredients

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

Herb & supplement monograph

Blueberry

Interacts with 88 drugs

Blueberries are a nutritious fruit rich in antioxidants called anthocyanins, and eating them as part of a balanced diet is healthy and safe for most people. Concentrated supplements are mark...

Read the full Blueberry monograph →
Sources

Sources & How We Checked

Blueberry'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 7 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.

Blueberry 7 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. Wang SY, Lin HS. Antioxidant activity in fruits and leaves of blackberry, raspberry, and strawberry varies with cultivar and developmental stage. J Agric Food Chem 2000;48:140-6.. PubMed
  3. Martineau, L. C., Couture, A., Spoor, D., Benhaddou-Andaloussi, A., Harris, C., Meddah, B., Leduc, C., Burt, A., Vuong, T., Mai, Le P., Prentki, M., Bennett, S. A., Arnason, J. T., and Haddad, P. S. Anti-diabetic properties of the Canadian lowbush bluebe
  4. Vuong, T., Martineau, L. C., Ramassamy, C., Matar, C., and Haddad, P. S. Fermented Canadian lowbush blueberry juice stimulates glucose uptake and AMP-activated protein kinase in insulin-sensitive cultured muscle cells and adipocytes. Can J Physiol Pharma
  5. Hanley MJ, Masse G, Harmatz JS, Cancalon PF, Dolnikowski GG, Court MH, Greenblatt DJ. Effect of blueberry juice on clearance of buspirone and flurbiprofen in human volunteers. Br J Clin Pharmacol. 2013 Apr;75(4):1041-52. PubMed
  6. Basu A, Du M, Leyva MJ, et al. Blueberries decrease cardiovascular risk factors in obese men and women with metabolic syndrome. J Nutr 2010;140(9):1582-7. PubMed
  7. Basu A, Feng D, Planinic P, Ebersole JL, Lyons TJ, Alexander JM. Dietary blueberry and soluble fiber supplementation reduces risk of gestational diabetes in women with obesity in a randomized controlled trial. J Nutr 2021;151(5):1128-38. PubMed

See these in context on the Blueberry 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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