Slippery Elm for Irritable Bowel Syndrome (IBS)

Single pilot study in IBS-C showed modest improvement. Traditional use is extensive but clinical evidence is extremely limited.

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The Bottom Line

Single pilot study in IBS-C showed modest improvement. Traditional use is extensive but clinical evidence is extremely limited.

Key Study Findings

Controlled Clinical Trial n=43 4 weeks

Herbal formula improves upper and lower gastrointestinal symptoms and gut health in Australian adults with …

Dose: 5 g/d vs: None Outcome: None Effect: None None

Population: IBS patients

Randomized Controlled Trial n=31 Open-label

Effects of two natural medicine formulations on irritable bowel syndrome symptoms: a pilot study.

Dose: None vs: None Outcome: pain Effect: None p = 0.027

Population: IBS patients

Key Statistics

Studies

Participants

↑

Positive

Grade

Referenced Papers

Herbal formula improves upper and lower gastrointestinal symptoms and gut health in Australian adults with digestive disorders. CCT

Nutrition research (New … 2020 42 citations

Effects of two natural medicine formulations on irritable bowel syndrome symptoms: a pilot study. Other

Journal of alternative … 2010 25 citations

Dosage & Usage

mg = milligrams · mcg = micrograms (1,000× smaller) · IU = International Units

Commonly Used Dosages

general:: 400-800 mg bark powder 3 times daily, or 5 mL tincture 3 times daily
gerdsupport:: Mix 1-2 tablespoons powder in water, drink before meals
throatsoothing:: Lozenges as needed

Upper limit: Not established; traditional use up to 2,400 mg/day bark powder

Dosages Studied in Research

Dosage	Duration	Effect	N
5 g/d	4 weeks	Positive	43
None	--	Mixed	31

Best taken: Before meals or between meals; space 1-2 hours from medications

Safety & Side Effects

Reported Side Effects

⚠ May slow absorption of oral medications due to mucilage coating (space 1-2 hours)
⚠ Rare allergic reactions (contact dermatitis reported)
⚠ Mild nausea in some individuals
⚠ Potential for contaminants in unregulated products

Known Interactions

● May reduce absorption of oral medications by coating the GI tract (space 1-2 hours from all oral meds)
● No significant pharmacological interactions known

Tolerable upper intake: Not established; traditional use up to 2,400 mg/day bark powder

Always consult your healthcare provider before starting any supplement.

Frequently Asked Questions

Does Slippery Elm help with Irritable Bowel Syndrome (IBS)?

Based on 1 studies with 40 participants, there is preliminary evidence that needs more research that Slippery Elm may support Irritable Bowel Syndrome (IBS) management. Our evidence grade is D (Very Early Research).

How much Slippery Elm should I take for Irritable Bowel Syndrome (IBS)?

Studies have used various dosages. A commonly studied range is 400-800 mg bark powder 3 times daily, or 5 mL tincture 3 times daily. Always consult your healthcare provider before starting any supplement regimen.

Are there side effects of Slippery Elm?

Reported side effects may include May slow absorption of oral medications due to mucilage coating (space 1-2 hours), Rare allergic reactions (contact dermatitis reported), Mild nausea in some individuals, Potential for contaminants in unregulated products. Most side effects are mild and dose-dependent. Consult your doctor if you experience any adverse reactions.

How strong is the evidence for Slippery Elm and Irritable Bowel Syndrome (IBS)?

We rate the evidence as Grade D (Very Early Research). This rating is based on 1 peer-reviewed studies with 40 total participants. The overall direction of effect is positive.

Related Evidence

Other ingredients for Irritable Bowel Syndrome (IBS)

Peppermint Oil A Lactobacillus rhamnosus GG B Psyllium Husk B Lactobacillus plantarum B Partially Hydrolyzed Guar Gum (PHGG) B Bifidobacterium longum B

Slippery Elm for other conditions

Gastroesophageal Reflux Disease (GERD) D

Quick Verdict

Single pilot study in IBS-C showed modest improvement. Traditional use is extensive but clinical evidence is extremely limited.

Evidence Strength30%

Low confidence

Study Breakdown

RCT (0)Meta (0)Other (1)

Compare Alternatives

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Learn More

FDA Disclaimer: These statements have not been evaluated by the Food and Drug Administration. The products and information on this website are not intended to diagnose, treat, cure, or prevent any disease. The evidence grades presented are based on our analysis of published peer-reviewed research and do not constitute medical advice. Always consult your healthcare provider before starting any supplement regimen.