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Dietary supplement

Marshmallow Root Ingredients & Drug Interactions

by New Sun

Marshmallow Root 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 Marshmallow Root 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

Marshmallow Root is a dietary supplement by New Sun with 1 active ingredient. Its ingredients are commonly taken for cough and sore throat, dry mouth and throat irritation, digestive upset and heartburn.Based on those ingredients, 2,040 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Marshmallow. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against Marshmallow Root by New Sun

Ask about any prescription or over-the-counter medication and we check it for interactions with Marshmallow Root by New Sun — and tell you which ingredient is responsible.

Pharmacist-reviewed data Checks every ingredient Answer in seconds
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HelloPharmacist Scorecard of Marshmallow Root by New Sun

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 Aug 20, 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: marshmallow root. Marshmallow is a plant whose root has been used traditionally to soothe irritation in the mouth and throat and to support digestive comfort.

The capsule itself is made of gelatin, an inactive ingredient.

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 Marshmallow product and its label doesn't state a use — see Marshmallow'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 evidence isn't established in our data for marshmallow root's effectiveness. It has been studied for vaginal yeast infections, diarrhea, leg ulcers, eczema, and upper respiratory infections, but the available evidence is insufficient to rate whether it actually works for any of these.

If you're considering it for a specific concern, talk it over with your doctor or pharmacist.

The evidence, ingredient by ingredient Marshmallow

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.

Marshmallow root is generally well tolerated for short-term use, but human safety data are limited. There aren't enough reliable studies to know whether it's safe during pregnancy or while breastfeeding — the available data advise against use in both situations.

Adverse effects in trials haven't been documented in our data. If you're pregnant, nursing, or planning to become pregnant, check with your doctor or pharmacist before starting.

Side effects, ingredient by ingredient Marshmallow

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 — Marshmallow.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs; lithium.
  • For scale: 2,041 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.

If you take lithium, check with your doctor or pharmacist before starting — your lithium dose may need adjustment. Also double-check any oral medications you take regularly; spacing them 30–60 minutes away from marshmallow will help avoid absorption problems.

If you're on blood thinners (anticoagulants) or antiplatelet drugs, mention this product to your pharmacist as well.

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. Moderate medication interactions have been identified, and some safety-information gaps remain.

Marshmallow Root by New Sun is a single-ingredient supplement traditionally used to soothe throat and mouth irritation. Its main interactions are with lithium (which may need dose adjustment) and oral medications (which should be spaced 30–60 minutes apart from it).

It isn't recommended in pregnancy or while breastfeeding. Talk with your doctor or pharmacist before adding it to your routine, especially if you take lithium or blood thinners.

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 Oct 1, 2012.

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 Marshmallow Root, straight from the product label.

Brand New Sun
Barcode (UPC) 60-4
Net contents 100 Capsule(s)
Market status On market
Date entered into DSLD Oct 1, 2012
DSLD ID 11880
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 Marshmallow Root by New Sun, 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 Capsule(s)
Maximum serving Sizes:
2 Capsule(s)
Servings per container
50
UPC/BARCODE
60-4
IngredientAmount% DV
Marshmallow1000 mg--

Other ingredients: Gelatin

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.
Precautions

Warning: Marshmallow may delay the absorbtion of supplements or drugs when taken at the same time. If you are pregant, nursing, taking any medications, or experiencing health issues, consult your doctor before use.

Do not use if safety seal is missing or broken.

Keep out of reach of children.

General

Product No. 60-4 V4.0

FDA Statement of Identity

Dietary Supplement

Formulation

This product does not contain: yeast, corn, wheat, egg, gluten, milk, soy, sugar, salt, preservatives or artifical coloring.

Suggested/Recommended/Usage/Directions

Recommendation: As a dietary supplement, take two capsules with meals three times daily.

Storage

Store in a cool, dry place

FDA Disclaimer Statement

This product is not intended to diagnose, treat, cure, or prevent any disease.

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

See for yourself

Marshmallow Root by New Sun label

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

Marshmallow Root 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 Marshmallow Root by New Sun

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

Serving size2 Capsule(s) Dosage formCapsule Servings per container50 Amounts shown are per serving.

Marshmallow

Interacts with
2,040 drugs
1000 mg per serving

Marshmallow root is a traditional herb rich in soothing, gel-like fibers called mucilage, which is why it has long been used for coughs, sore throats,...

Marshmallow monograph & interactions

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

Interaction report

Marshmallow Root by New Sun Drug Interactions

Want to check YOUR meds against Marshmallow Root?

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
2,040Drugs
1 Moderate 2,039 Minor

Ingredients driving the most interactions

Marshmallow 2,040

Individual Drug Interactions

The ingredients in Marshmallow Root interact with 2,040 drugs. Click any drug to see the details.

1 of the 1 ingredient in Marshmallow Root interact with drugs. Each result below shows which ingredient is responsible. Marshmallow

Each ingredient & the kinds of drugs it affects

For each ingredient in Marshmallow Root 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.

Marshmallow3 drug types · 2,040 drugs

Lithium

Theoretically, due to potential diuretic effects, marshmallow might reduce excretion and increase levels of lithium.
Marshmallow is thought to have diuretic properties. To avoid lithium toxicity, the dose of lithium might need to be decreased when used with marshmallow.

Likelihood Probable Evidence D
Anticoagulant/Antiplatelet Drugs

Theoretically, marshmallow flower might have antiplatelet effects.
Animal research suggests that marshmallow flower extract has antiplatelet effects. However, the root and leaf of marshmallow, not the flower, are the plant parts most commonly found in dietary supplements. Theoretically, use of marshmallow flower with anticoagulant/antiplatelet drugs can have additive effects, and might increase the risk for bleeding in some patients.

Likelihood Unlikely Evidence D
Oral Drugs

Theoretically, mucilage in marshmallow might impair absorption of oral drugs.
Marshmallow contains mucilage which can affect oral drug absorption. To avoid changes in absorption, take marshmallow 30-60 minutes after oral medications.

Likelihood Possible Evidence D
Marshmallow full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Marshmallow Root, from the product label.

New Sun

See all New Sun products
Name
New Sun
City
Hendersonville
State
NC
ZipCode
28792
Phone Number
1-800-544-0777
Web Address
www.newsun.net
Pharmacist Counseling Corner

Marshmallow Root by New Sun: Common Questions

Does Marshmallow Root by New Sun interact with any medications?
Yes. Based on its ingredients, Marshmallow Root has a known interaction with 2,040 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Marshmallow Root 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.
Can I take this if I'm on lithium?
Not without talking to your doctor first. Marshmallow may reduce how your body clears lithium, raising the drug's level and risking toxicity. Your lithium dose might need to be lowered if you use marshmallow, so this is a conversation you need to have with your prescriber.
Can I take this while pregnant or breastfeeding?
There isn't enough safety data to recommend it during pregnancy or while nursing. The available information advises against both. If you're pregnant, planning pregnancy, or breastfeeding, talk with your doctor or pharmacist about whether this product is right for you.
Does this actually work for sore throat or cough?
The evidence isn't strong enough in our data to say whether marshmallow root works for a sore throat, cough, or other respiratory discomfort. It's been studied for these uses, but the available evidence is insufficient to rate it. Your doctor can discuss whether it's worth a try for your situation.
How do I take this with my other medications?
Take marshmallow 30–60 minutes after your other oral medications. The mucilage in marshmallow can slow down how your stomach absorbs drugs, so spacing them apart helps keep your medications working as intended.
Are there any side effects?
Adverse effects in trials aren't documented in our data. Marshmallow is generally well tolerated for short-term use, but human safety data are limited, so long-term use is less clear.

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

Not sure if Marshmallow Root is safe with your meds?

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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.

Marshmallow Root label
Go deeper

The Full Monographs Behind Marshmallow Root’s Ingredients

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

Herb & supplement monograph

Marshmallow

Interacts with 2,040 drugs

Marshmallow root is a traditional herb rich in soothing, gel-like fibers called mucilage, which is why it has long been used for coughs, sore throats, and stomach irritation. Evidence for th...

Read the full Marshmallow monograph →
Sources

Sources & How We Checked

Marshmallow Root'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 5 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.

Marshmallow 5 references
  1. Monographs on the medicinal uses of plant drugs. Exeter, UK: European Scientific Co-op Phytother, 1997.
  2. Leung AY, Foster S. Encyclopedia of Common Natural Ingredients Used in Food, Drugs and Cosmetics. 2nd ed. New York, NY: John Wiley & Sons, 1996.
  3. McGuffin M, Hobbs C, Upton R, Goldberg A, eds. American Herbal Products Association's Botanical Safety Handbook. Boca Raton, FL: CRC Press, LLC 1997.
  4. Brinker F. Herb Contraindications and Drug Interactions. 2nd ed. Sandy, OR: Eclectic Medical Publications, 1998.
  5. Hage-Sleiman R, Mroueh M, Daher CF. Pharmacological evaluation of aqueous extract of Althaea officinalis flower grown in Lebanon. Pharm Biol 2011;49(3):327-33.

See these in context on the Marshmallow 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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