Slippery Elm Bark 400 mg Ingredients & Drug Interactions
What is this page for?
First and foremost: checking Slippery Elm Bark 400 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
Slippery Elm Bark 400 mg is a dietary supplement by Swanson Premium Brand 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 Slippery Elm. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against Slippery Elm Bark 400 mg by Swanson Premium Brand
Ask about any prescription or over-the-counter medication and we check it for interactions with Slippery Elm Bark 400 mg by Swanson Premium Brand — and tell you which ingredient is responsible.
AI summaries are generated from our interaction database for education only — always confirm with your pharmacist. How we use AI
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HelloPharmacist Scorecard of Slippery Elm Bark 400 mg by Swanson Premium Brand
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.
What’s inside
Full disclosure
This product contains one active ingredient: slippery elm bark at 400 mg per capsule. Slippery elm is the inner bark of a tree, traditionally used to soothe the digestive tract and throat.
The capsule also holds inactive ingredients — gelatin, microcrystalline cellulose, magnesium stearate, and silica — which are common binders and fillers.
Does it work?
Couldn't assess
The evidence we hold on slippery elm doesn't support a clear rating yet. For cancer, constipation, cough, inflammatory bowel disease (IBD), and diarrhea, the data is insufficient to say whether it's effective or not.
If you're considering it for one of these uses, talk with your doctor or pharmacist about what the current evidence shows and whether it's right for your situation.
How safe is it?
Well-documented data
Slippery elm is generally well tolerated for short-term use, though high-quality safety data are limited. Contact dermatitis, hives, and allergic reactions have been reported after direct exposure to slippery elm or its pollen — mostly with topical use or inhalation.
For pregnancy, there isn't enough reliable safety data, so caution is advised. There's also too little information on safety while breastfeeding — talk with your doctor or pharmacist before using it if you're pregnant or nursing.
Meds to double-check
Moderate interaction found
Any oral medications you take — prescription, over-the-counter, or both — may have their absorption slowed by slippery elm's mucilage, which is rated a Moderate interaction. This could lower how much of the drug reaches your bloodstream.
Use the medication checker on this page with your specific drugs, and confirm the timing and safety with your doctor or pharmacist before combining them with this supplement.
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 might appeal to you if you're looking for a throat or digestive tract soother, but the evidence for its effectiveness isn't yet established. The key thing to watch is that it may slow how your body absorbs oral medications — a Moderate concern affecting a large number of drugs.
Before you start, check your exact medications with your own doctor or pharmacist to make sure none will be affected.
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
General information
Key facts about Slippery Elm Bark 400 mg, straight from the product label.
| Brand | Swanson Premium Brand |
|---|---|
| Barcode (UPC) | 087914114054 |
| Net contents | 60 Capsule(s) |
| Market status | On market |
| Date entered into DSLD | Feb 25, 2019 |
| DSLD ID | 186335 |
| Product type | Botanical |
| Supplement form | Capsule |
| Dietary claims / uses | All Other |
| Intended target group(s) | Adult (18 - 50 Years) |
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 Bark 400 mg by Swanson Premium Brand, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Slippery Elm | 800 mg | -- |
Other ingredients: Gelatin, Microcrystalline Cellulose, Magnesium Stearate, Silica
Tap any ingredient to jump to its full detail below.
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
Bringing wellness to the world since 1969
To reorder, call toll free 1-800-437-4148 or visit our website at www.swansonvitamins.com
FDA Statement of Identity
Herbal Supplement
Seals/Symbols
Guaranteed purity & potency
Precautions
Do not use if seal is broken.
Keep out of reach of children.
Warning: Not to be taken by individuals who are pregnant, trying to conceive, or lactating.
Storage
Store in a cool, dry place.
Suggested/Recommended/Usage/Directions
Suggested use: As a dietary supplement, take two capsules per day with water.
General
SW1405 Rev 1 09 06 17
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Slippery Elm Bark 400 mg by Swanson Premium Brand label
The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.
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)The Ingredients in Slippery Elm Bark 400 mg by Swanson Premium Brand
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 container30 Amounts shown are per serving.
Slippery Elm
Interacts with2,022 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 di...
Slippery Elm monograph & interactionsOther (inactive) ingredients: Gelatin, Microcrystalline Cellulose, Magnesium Stearate, Silica. These complete the product’s ingredient list but are not active constituents.
Slippery Elm Bark 400 mg by Swanson Premium Brand Drug Interactions
HelloPharmacist Interaction Report
Slippery Elm Bark 400 mg by Swanson Premium Brand contains one active ingredient — slippery elm — that interacts with oral medications.
The ingredient's mucilage may slow how your body absorbs oral drugs and lower their levels in your blood, which is a Moderate concern affecting numerous medications.
Read the full breakdown — every affected drug type, severity by severity
Because slippery elm can interfere with drug absorption, you'll want to check any oral medications you take — prescription or over-the-counter — before starting this supplement. The effect depends partly on timing and which specific drugs you're on.
Altogether, these interactions span 2,023 individual medications.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against Slippery Elm Bark 400 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 checkerIngredients driving the most interactions
Individual Drug Interactions
The ingredients in Slippery Elm Bark 400 mg interact with 2,022 drugs. Click any drug to see the details.
1 of the 1 ingredient in Slippery Elm Bark 400 mg interact with drugs. Each result below shows which ingredient is responsible. Slippery Elm
"phentolamineOraVerse, Rogitine, Ryzumvi
How "phentolamine interacts with Slippery Elm Bark 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Slippery ElmOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm + "phentolamine interaction6-mercaptopurinePurinethol
How 6-mercaptopurine interacts with Slippery Elm Bark 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Slippery ElmOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm + 6-mercaptopurine interactionAbacavirZiagen
How Abacavir interacts with Slippery Elm Bark 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Slippery ElmOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm + Abacavir interactionAbacavir Sulfate, Dolutegravir, LamivudineTriumeq
How Abacavir Sulfate, Dolutegravir, Lamivudine interacts with Slippery Elm Bark 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Slippery ElmOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm + Abacavir Sulfate, Dolutegravir, Lamivudine interactionAbacavir, LamivudineEpzicom
How Abacavir, Lamivudine interacts with Slippery Elm Bark 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Slippery ElmOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm + Abacavir, Lamivudine interactionAbciximabReoPro
How Abciximab interacts with Slippery Elm Bark 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Slippery ElmOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm + Abciximab interactionAbemaciclibVerzenio
How Abemaciclib interacts with Slippery Elm Bark 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Slippery ElmOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm + Abemaciclib interactionAbiraterone
How Abiraterone interacts with Slippery Elm Bark 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Slippery ElmOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm + Abiraterone interactionAbiraterone AcetateYonsa, Zytiga
How Abiraterone Acetate interacts with Slippery Elm Bark 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Slippery ElmOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm + Abiraterone Acetate interactionAbrocitinibCibinqo
How Abrocitinib interacts with Slippery Elm Bark 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Slippery ElmOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm + Abrocitinib interactionAcalabrutinibCalquence
How Acalabrutinib interacts with Slippery Elm Bark 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Slippery ElmOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm + Acalabrutinib interactionAcamprosateCampral
How Acamprosate interacts with Slippery Elm Bark 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Slippery ElmOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm + Acamprosate interactionAcarboseGlucobay, Prandase, Precose
How Acarbose interacts with Slippery Elm Bark 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Slippery ElmOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm + Acarbose interactionAcebutololRhotral, Sectral
How Acebutolol interacts with Slippery Elm Bark 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Slippery ElmOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm + Acebutolol interactionAcenocoumarolSintrom
How Acenocoumarol interacts with Slippery Elm Bark 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Slippery ElmOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm + Acenocoumarol interactionAcepromazineAtravet
How Acepromazine interacts with Slippery Elm Bark 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Slippery ElmOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm + Acepromazine interactionAcetaminophenChildren's Tylenol, Children's Tylenol Meltaways, Tylenol, Tylenol Ex Strength
How Acetaminophen interacts with Slippery Elm Bark 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Slippery ElmOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm + Acetaminophen interactionAcetaminophen, AspirinGemnisyn
How Acetaminophen, Aspirin interacts with Slippery Elm Bark 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Slippery ElmOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm + Acetaminophen, Aspirin interactionAcetaminophen, Aspirin, CaffeineExcedrin, Excedrin Extra Strength, Excedrin Migraine
How Acetaminophen, Aspirin, Caffeine interacts with Slippery Elm Bark 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Slippery ElmOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm + Acetaminophen, Aspirin, Caffeine interactionAcetaminophen, Brompheniramine, PhenylpropanolamineDimetapp Cold and Flu
How Acetaminophen, Brompheniramine, Phenylpropanolamine interacts with Slippery Elm Bark 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Slippery ElmOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm + Acetaminophen, Brompheniramine, Phenylpropanolamine interactionAcetaminophen, ButalbitalAxocet, Bancap, Bucet, Butex Forte, Esgic CF, Orbivan CF +5 more
How Acetaminophen, Butalbital interacts with Slippery Elm Bark 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Slippery ElmOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm + Acetaminophen, Butalbital interactionAcetaminophen, Butalbital, CaffeineEsgic, Esgic Plus, Fiogesic, Fioricet, Repan, Tecnal +1 more
How Acetaminophen, Butalbital, Caffeine interacts with Slippery Elm Bark 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Slippery ElmOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm + Acetaminophen, Butalbital, Caffeine interactionAcetaminophen, Butalbital, Caffeine, CodeineEsgic with Codeine, Fioricet w/ Codeine
How Acetaminophen, Butalbital, Caffeine, Codeine interacts with Slippery Elm Bark 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Slippery ElmOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm + Acetaminophen, Butalbital, Caffeine, Codeine interactionAcetaminophen, Butalbital, CodeineBancap w/ Codeine
How Acetaminophen, Butalbital, Codeine interacts with Slippery Elm Bark 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Slippery ElmOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm + Acetaminophen, Butalbital, Codeine interactionAcetaminophen, Butalbital, Codeine PhosphatePhrenilin #3
How Acetaminophen, Butalbital, Codeine Phosphate interacts with Slippery Elm Bark 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Slippery ElmOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm + Acetaminophen, Butalbital, Codeine Phosphate interactionAcetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, PhenylephrineHycomine Compound
How Acetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, Phenylephrine interacts with Slippery Elm Bark 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Slippery ElmOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm + Acetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, Phenylephrine interactionAcetaminophen, Caffeine, CodeineGesic C15, Gesic C30, Gesic C8, Lenoltec 1, Lenoltec 2, Lenoltec 3 +1 more
How Acetaminophen, Caffeine, Codeine interacts with Slippery Elm Bark 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Slippery ElmOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm + Acetaminophen, Caffeine, Codeine interactionAcetaminophen, Caffeine, Codeine, SalicylamideCodalan No.1, Codalan No.2, Codalan No.3
How Acetaminophen, Caffeine, Codeine, Salicylamide interacts with Slippery Elm Bark 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Slippery ElmOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm + Acetaminophen, Caffeine, Codeine, Salicylamide interactionAcetaminophen, Caffeine, DihydrocodeineDHC Plus, Panlor DC, Panlor SS
How Acetaminophen, Caffeine, Dihydrocodeine interacts with Slippery Elm Bark 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Slippery ElmOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm + Acetaminophen, Caffeine, Dihydrocodeine interactionAcetaminophen, Caffeine, IsomethepteneMigralam
How Acetaminophen, Caffeine, Isometheptene interacts with Slippery Elm Bark 400 mg — through 1 ingredient. Tap an ingredient for the detail:
Slippery ElmOral Drugs Moderate
Interaction Summary
Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.
Read the full Slippery Elm + Acetaminophen, Caffeine, Isometheptene interactionEach ingredient & the kinds of drugs it affects
For each ingredient in Slippery Elm Bark 400 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.
Slippery Elm
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.
Brand information
Manufacturer and brand details for Slippery Elm Bark 400 mg, from the product label.
Swanson Premium Brand
See all Swanson Premium Brand products- Name
- Swanson Health Products
- City
- Fargo
- State
- ND
- ZipCode
- 58104
- Phone Number
- 1-800-437-4148
- Web Address
- www.swansonvitamins.com
Slippery Elm Bark 400 mg by Swanson Premium Brand: Common Questions
Does Slippery Elm Bark 400 mg by Swanson Premium Brand interact with any medications?
How can one product interact with so many drugs?
Where does this information come from?
Will slippery elm affect how my medications work?
Can I take slippery elm while breastfeeding?
Is slippery elm safe during pregnancy?
Does slippery elm actually work for constipation, diarrhea, or cough?
Are there any side effects?
What's in this capsule besides slippery elm?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if Slippery Elm Bark 400 mg is safe with your meds?
Our pharmacists answer your medication & supplement questions — free.
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.
The Full Monographs Behind Slippery Elm Bark 400 mg’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Sources & How We Checked
Slippery Elm Bark 400 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.
- NIH Dietary Supplement Label Database (DSLD) — The official product label on file for this supplement.
- Natural Medicines (Therapeutic Research Center) — Evidence-graded clinical reference behind the ingredient interaction data.
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
- The Review of Natural Products by Facts and Comparisons. St. Louis, MO: Wolters Kluwer Co., 1999.
- Brinker F. Herb Contraindications and Drug Interactions. 2nd ed. Sandy, OR: Eclectic Medical Publications, 1998.
- Czarnecki D, Nixon R, Bekhor P, and et al. Delayed prolonged contact urticaria from the elm tree. Contact Dermatitis 1993;28:196-197. PubMed
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