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Dietary supplement

Slippery Elm Ingredients & Drug Interactions

by Oregon's Wild Harvest

Slippery Elm 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 Slippery Elm 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

Slippery Elm is a dietary supplement by Oregon's Wild Harvest with 1 active ingredient. Its ingredients are commonly taken for sore throat and cough, heartburn and acid reflux, digestive upset and ibs.Based on those ingredients, 2,022 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are organic Slippery Elm. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

Jump to a section

Check Your Meds Against Slippery Elm by Oregon's Wild Harvest

Ask about any prescription or over-the-counter medication and we check it for interactions with Slippery Elm by Oregon's Wild Harvest — and tell you which ingredient is responsible.

Pharmacist-reviewed data Checks every ingredient Answer in seconds
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HelloPharmacist Scorecard of Slippery Elm by Oregon's Wild Harvest

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 11, 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: organic slippery elm, the inner bark of the slippery elm tree. The capsule also includes pullulan as an inactive ingredient — a binder that helps hold the capsule together.

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 Slippery Elm product and its label doesn't state a use — see Slippery Elm'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 we hold doesn't establish whether slippery elm works for any of its common uses — cough, constipation, diarrhea, or inflammatory bowel disease (IBD). The same goes for cancer.

Our data rates all of these as having insufficient reliable evidence to make a judgment. If you're considering it for a specific reason, talk with your pharmacist about what the broader research landscape looks like.

The evidence, ingredient by ingredient Slippery Elm

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.

Slippery elm is generally well tolerated for short-term use, but high-quality safety data are limited. The main side effects reported are contact dermatitis and hives — mostly from skin exposure or inhalation of the pollen, which is an allergen.

There isn't enough reliable data on safety during pregnancy or breastfeeding, so caution is advised in those situations. Chat with your doctor or pharmacist before starting if you're pregnant, planning to become pregnant, or nursing.

Side effects, ingredient by ingredient Slippery Elm

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 — Slippery Elm.
  • The most serious interaction on file is rated Moderate.
  • For scale: 2,023 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 take Oregon's Wild Harvest Slippery Elm, check any oral medications — prescription and over-the-counter — with the tool on this page. Slippery elm's mucilage can slow how your body absorbs drugs taken by mouth, which is a Moderate-severity risk.

Space this product at least 2 hours away from your other oral medications to lower the chance of interference.

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 safety information is well characterized.

Slippery elm may be worth a try if you're dealing with stomach or throat issues, but the evidence for it is thin. The bigger thing to watch is spacing it away from your oral medications — this product can interfere with how your body absorbs them.

Run your exact medications through the checker on this page, and talk with your pharmacist before you start.

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 May 23, 2024.

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 Slippery Elm, straight from the product label.

Brand Oregon's Wild Harvest
Barcode (UPC) 706195004228
Net contents 90 Vegan Capsule(s)
Market status On market
Date entered into DSLD May 23, 2024
DSLD ID 307367
Product type Botanical
Supplement form Capsule
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years), Women (not pregnant or lactating), Organic, Gluten Free, Dairy 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 Slippery Elm by Oregon's Wild Harvest, 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
30
UPC/BARCODE
706195004228
IngredientAmount% DV
organic Slippery Elm1200 mg--

Other ingredients: Pullulan

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.
General Statements

Organic to our roots As certified organic farmers since 1994, our regenerative practices heal the land and water and sequester carbon from the atmosphere, while ensuring that pure, potent herbal medicine is available today and for future generations. Peace.

Formulation

Free from: Gluten, dairy and soy allergens.

Made with organic herb

Comfort the throat & soothe the tummy

GF (Gluten free) Verified Non-GMO Product verified non-GMO by SGS.

Certified Organic by Oregon Tilth

Precautions

Caution: Keep out of reach of children.

If taking medication consult with a healthcare professional before use. Do not take if pregnant or nursing.

Discontinue use if unusual symptoms occur.

Do not exceed recommended dose.

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.

Brand IP Statement(s)

Oregon's Wild Harvest Herbal Supplement Family Farm Since 1994

FDA Statement of Identity

Herbal Supplement

Seals/Symbols

Verified Non-GMO

Oregon Tilth Certified Organic (OTCO)

Suggested/Recommended/Usage/Directions

Suggested Use: As an herbal supplement, take one capsule three times daily with plenty of water or as directed by your healthcare professional. Allow at least one hour between taking Slippery Elm and any other medication. Do not exceed recommended dose.

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

See for yourself

Slippery Elm by Oregon's Wild Harvest label

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

Slippery Elm 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 Slippery Elm by Oregon's Wild Harvest

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 container30 Amounts shown are per serving.

Organic Slippery Elm

Interacts with
2,022 drugs
1200 mg per serving

Slippery elm is a traditional herbal remedy made from the inner bark of a North American elm tree, used mainly to soothe sore throats and irritated di...

Organic Slippery Elm monograph & interactions

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

Interaction report

Slippery Elm by Oregon's Wild Harvest Drug Interactions

Want to check YOUR meds against Slippery Elm?

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
2,022Drugs
2,022 Moderate

Ingredients driving the most interactions

organic Slippery Elm 2,022

Individual Drug Interactions

The ingredients in Slippery Elm interact with 2,022 drugs. Click any drug to see the details.

1 of the 1 ingredient in Slippery Elm interact with drugs. Each result below shows which ingredient is responsible. organic Slippery Elm

Each ingredient & the kinds of drugs it affects

For each ingredient in Slippery Elm 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.

organic Slippery Elm1 drug type · 2,022 drugs

Oral Drugs

Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Slippery elm inner bark contains mucilage, which may interfere with the absorption of orally administered drugs.

Likelihood Possible Evidence D
organic Slippery Elm full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Slippery Elm, from the product label.

Oregon's Wild Harvest

See all Oregon's Wild Harvest products
Name
Oregon's Wild Harvest
City
Redmond
State
OR
ZipCode
97756
Phone Number
800-316-6869
Web Address
oregonswildharvest.com
Pharmacist Counseling Corner

Slippery Elm by Oregon's Wild Harvest: Common Questions

Does Slippery Elm by Oregon's Wild Harvest interact with any medications?
Yes. Based on its ingredients, Slippery Elm has a known interaction with 2,022 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Slippery Elm 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.
Is slippery elm safe to take while I'm pregnant?
There isn't enough reliable safety data to know either way. Some sources caution against using it during pregnancy. Talk with your doctor or pharmacist for personalized advice about your situation.
Can I take this while I'm breastfeeding?
There's too little information on safety while breastfeeding, so caution is advised. It's best to check with your doctor or pharmacist before starting.
Does slippery elm actually help with constipation or diarrhea?
The evidence we hold rates both of those as having insufficient reliable evidence to judge whether it works. If you're thinking about using it for one of those reasons, your pharmacist can talk you through what's known.
What exactly is slippery elm?
It's the inner bark of the slippery elm tree. The bark contains a substance called mucilage, which gives it a slippery texture and is why it's been used traditionally for throat and digestive complaints.
Can slippery elm cause any side effects?
Contact dermatitis and hives have been reported, mostly from skin contact or breathing in the pollen, which can trigger allergies. Taken as a capsule by mouth, it's generally well tolerated in the short term, though we don't have a lot of long-term safety data.
Do I need to space out this supplement from my medications?
Yes. Slippery elm can slow how your body absorbs oral medications, so take it at least 2 hours away from any pills you take by mouth. Check your specific medications with the tool on this page before you start.

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

Not sure if Slippery Elm 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.

Slippery Elm label
Go deeper

The Full Monographs Behind Slippery Elm’s Ingredients

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

Herb & supplement monograph

Slippery Elm

Interacts with 2,022 drugs

Slippery elm is a traditional herbal remedy made from the inner bark of a North American elm tree, used mainly to soothe sore throats and irritated digestive tracts. Its mucilage can coat an...

Read the full Slippery Elm monograph →
Sources

Sources & How We Checked

Slippery Elm'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 3 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.

Slippery Elm 3 references
  1. The Review of Natural Products by Facts and Comparisons. St. Louis, MO: Wolters Kluwer Co., 1999.
  2. Brinker F. Herb Contraindications and Drug Interactions. 2nd ed. Sandy, OR: Eclectic Medical Publications, 1998.
  3. Czarnecki D, Nixon R, Bekhor P, and et al. Delayed prolonged contact urticaria from the elm tree. Contact Dermatitis 1993;28:196-197. PubMed

See these in context on the Slippery Elm 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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