No known drug interactions for the matched ingredients — not a guarantee none exist. Check your meds →
Dietary supplement

Quince Ingredients & Drug Interactions

by Pure Herbs

Quince label
See full label image
Liquid Category: Botanical
No known interaction
Clinical methodology reviewed by · Updated Sep 9, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Quince 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 No known interaction

Quince is a dietary supplement by Pure Herbs with 1 active ingredient. Its ingredients are commonly taken for digestive upset and diarrhea, acid reflux and heartburn, sore throat and cough.We don’t currently list a known drug interaction for its mapped ingredients — but that doesn’t guarantee none exist, so always confirm with your pharmacist.

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HelloPharmacist Scorecard of Quince by Pure Herbs

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 Sep 3, 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: quince fruit extract from fresh fruit. Quince is a plant-based extract used traditionally to help with digestive and respiratory symptoms.

The rest of the product is made up of no additional inactive ingredients beyond what's in the extract itself.

Does it work?

Moderate evidence
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
Moderate

Some clinical evidence supports this product's ingredients for its stated purpose, but it isn't conclusive.

Why this rating?
  • The label markets this product for: relief of occasional stomach and intestinal discomfort.
  • We looked for evidence on: Gastroesophageal reflux disease (GERD), Peptic ulcers, indigestion, dyspepsia, gastrointestinal upset.
  • The strongest evidence on file: Quince is rated "Possibly Effective" for Gastroesophageal reflux disease (GERD) (Natural Medicines).
  • Also on file: Quince is rated "Insufficient Reliable Evidence To Rate" for Peptic ulcers.

Quince shows possibly effective evidence for gastroesophageal reflux disease (GERD) — so there's some evidence it may help, but the research isn't conclusive. For allergic rhinitis (hay fever), asthma, pregnancy-induced nausea and vomiting, and peptic ulcers, we don't hold enough reliable evidence to say whether quince works.

Talk with your doctor or pharmacist about whether it makes sense for your specific situation.

The evidence, ingredient by ingredient Quince

How safe is it?

Some data gaps
Safety Information · database check
Some gaps

Safety data exists for these ingredients, but with some important gaps.

Why this rating?
  • We hold adverse-effect (side-effect) data for 0 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.

Quince as a food is generally well tolerated, but concentrated supplements like this extract haven't been studied much. Because the extract is more potent than eating whole quince, use caution.

There isn't enough reliable information on quince supplements during breastfeeding either, so if you're nursing, check with your pharmacist or doctor before starting. The product doesn't list any common side effects in our data, but that doesn't mean none occur — concentrated forms are simply less researched.

Side effects, ingredient by ingredient Quince

Meds to double-check

No known interactions
Known Interaction Concern · database check
No known interactions

No medication interactions are currently documented for the matched ingredients — that isn't a guarantee none exist.

Why this rating?
  • None of the 1 matched ingredient has a documented medication interaction on file.

No interactions are documented for quince fruit extract in our data. Even so, it's worth checking your exact medications with the tool on this page before you start, and letting your pharmacist know you're adding it.

The bottom line

Scorecard at a glanceFully disclosed formula with some supporting evidence for its stated purpose. No medication interactions are currently documented, and some safety-information gaps remain.

Pure Herbs Quince may help with GERD symptoms, though the evidence is modest. It's generally well tolerated as a food, but concentrated extracts lack robust safety data, so go in cautiously and talk it over with your doctor or pharmacist first, especially if you're pregnant or breastfeeding.

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 Dec 13, 2022.

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 Quince, straight from the product label.

Brand Pure Herbs
Net contents 1 Fluid Ounce(s); 30 mL
Market status On market
Date entered into DSLD Dec 13, 2022
DSLD ID 278892
Product type Botanical
Supplement form Liquid
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years), Women (not pregnant or lactating)
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 Quince by Pure Herbs, 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:
2 mL
Maximum serving Sizes:
2 mL
Servings per container
15
IngredientAmount% DV
Quince Fruit Extract, Fresh1986 mg--

Other ingredients: None

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.
Suggested/Recommended/Usage/Directions

Directions: For adults, mix 2 mL (abt. 1/2 tsp) of extract in 2 fl. oz (60 mL) water one time daily preferably with a meal.

Shake well before use

Formulation

Beneficial for relief of occasional stomach and intestinal discomfort.

FDA Disclaimer Statement

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

Precautions

Warning: Not intended for use by pregnant or nursing women. If you have a medical condition or are taking medication, consult your doctor prior to use.

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

Keep out of reach of children

Brand IP Statement(s)

Pure Herbs, Ltd. Natural Herbal Extracts

FDA Statement of Identity

Dietary Supplement

General Statements

"No expense has been spared to provide the finest nature has to offer."

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

See for yourself

Quince by Pure Herbs label

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

Quince 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 Quince by Pure Herbs

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

Serving size2 mL Dosage formLiquid Servings per container15 Amounts shown are per serving.

Quince Fruit Extract, Fresh

No known
interactions
1986 mg per serving

Quince is a tart, apple-like fruit traditionally used for digestive complaints, reflux, and soothing the throat and skin. Early research is interestin...

Quince Fruit Extract, Fresh monograph & interactions

Other (inactive) ingredients: None. These complete the product’s ingredient list but are not active constituents.

Interaction report

Quince by Pure Herbs Drug Interactions

We don’t currently list any known drug interactions for the mapped ingredients in Quince. This doesn’t guarantee none exist — always confirm with your pharmacist before combining a supplement with your medications.

The maker

Brand information

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

Pure Herbs

See all Pure Herbs products
Name
Pure Herbs, Ltd.
City
Sterling Heights
State
MI
Phone Number
(800) 860-4372
Web Address
www.pureherbs.com
Pharmacist Counseling Corner

Quince by Pure Herbs: Common Questions

Does Quince by Pure Herbs interact with any medications?
We do not currently list a known interaction for the mapped ingredients in Quince. This does not guarantee none exist, so confirm with your pharmacist.
How can one product interact with so many drugs?
Quince 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 this help my GERD or acid reflux?
Quince has possibly effective evidence for GERD, meaning there's some research suggesting it may help — but the evidence isn't strong or complete. It's worth trying if you're interested, but talk with your doctor about how it fits with your other reflux treatments.
Is quince safe if I'm pregnant?
We don't hold enough reliable information to say either way. Because this is a concentrated extract and not the whole food, there's extra reason to be cautious. Talk with your doctor or pharmacist about whether it's right for you during pregnancy.
Can I take this while breastfeeding?
There isn't enough reliable information on quince supplements during breastfeeding, so caution is advised. Check with your doctor or pharmacist before using it while nursing.
Does quince work for asthma or allergies?
We don't hold enough reliable evidence to say whether quince helps with asthma or allergic rhinitis (hay fever). If you're interested in trying it for those reasons, run it by your doctor first.
What's in this liquid — just quince?
Yes — the only active ingredient is quince fruit extract from fresh fruit. There are no other inactive ingredients listed.
Are there any side effects I should know about?
Common side effects aren't documented in our data. Quince as a whole food is generally well tolerated, but concentrated supplements like this haven't been studied extensively, so use caution and watch how you feel when you start it.

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

Not sure if Quince 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.

Quince label
Go deeper

The Full Monographs Behind Quince’s Ingredients

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

Herb & supplement monograph

Quince

Quince is a tart, apple-like fruit traditionally used for digestive complaints, reflux, and soothing the throat and skin. Early research is interesting but limited, so quince should not repl...

Read the full Quince monograph →
Sources

Sources & How We Checked

Quince'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.

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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