Ulmus rubra · Red Elm · Indian Elm
400 mg · vegan · gluten-free · 60 caps
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Ulmus rubra inner bark is a traditional North American remedy used as a demulcent for sore throat, cough, and gastrointestinal irritation. It contains mucilage that forms a soothing gel when mixed with water. The NIH LiverTox database confirms it is generally recognized as safe with no evidence of liver injury. However, no clinical trials have evaluated its efficacy for respiratory symptoms.
Slippery elm mucilage (complex polysaccharides including galactose, rhamnose, galacturonic acid) swells in water to form a viscous, slippery gel that coats mucous membranes. This physical barrier reduces irritation from coughing, swallowing, and acid reflux. The bark also contains tannins with mild astringent properties. No pharmacologically active compounds with systemic respiratory effects have been identified.
Adults with sore throat, hoarseness, or dry cough seeking soothing herbal support. Not a substitute for medical evaluation of persistent throat pain, dysphagia, or respiratory infection.
Avoid during pregnancy (folklore suggests potential miscarriage risk when inserted vaginally; oral safety is undetermined). Use caution with other medications—mucilage can reduce absorption. Take medications 2 hours before or 4 hours after slippery elm.
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✓ Take at first sign of throat irritation; can be taken multiple times daily
✓ Take at first sign of throat irritation; can be taken multiple times daily
✓ Take at first sign of throat irritation; can be taken multiple times daily
✓ Take with meals to reduce potential stomach upset and improve mucilage hydration
Slippery elm mucilage (complex polysaccharides including galactose, rhamnose, galacturonic acid) swells in water to form a viscous, slippery gel that coats mucous membranes.
Each bar = one cited trial. Effect varies by methodology, dose, and population.
Representative cohort from published RCT data
Relative to baseline (100). Data from published clinical literature.
Review
→ Slippery elm preparations are generally recognized as safe. No evidence of liver enzyme elevation or clinically apparent liver injury.
Review
→ Slippery elm and cramp bark showed antispasmodic effects on smooth muscle in animal and human tissue studies. No RCTs for sore throat or cough.
In vitro
→ Slippery elm tannins activate KCNQ5 potassium channels, causing smooth muscle relaxation
C · Generally recognized as safe with no liver toxicity. Zero human RCTs for sore throat, cough, or any respiratory endpoint. Traditional use and mucilage mechanism are the entire evidence base.
A plain-English read of the literature behind this supplement. Not a clinical recommendation.
Key citations: Abenavoli 2010 (hepatoprotection systematic review), Cacciapuoti 2013 (NAFLD RCT). richResearch section contains study filters.
How to use Slippery Elm specifically for Sore throat — the right dose, timing, blood markers to track, and how to know if it is working.
A clinical evidence review of Slippery Elm — RCT data, effect sizes, evidence grade, and what the numbers mean for your specific situation.
Everything you need to know about Slippery Elm — mechanism, dose, safety, buying guide for India, and what the research actually says.
SacredBod's longer take on Slippery Elm — context the structured blocks above don't capture.
Ulmus rubra inner bark is a traditional North American remedy used as a demulcent for sore throat, cough, and gastrointestinal irritation. It contains mucilage that forms a soothing gel when mixed with water. The NIH LiverTox database confirms it is generally recognized as safe with no evidence of liver injury. However, no clinical trials have evaluated its efficacy for respiratory symptoms.
Slippery elm mucilage (complex polysaccharides including galactose, rhamnose, galacturonic acid) swells in water to form a viscous, slippery gel that coats mucous membranes. This physical barrier reduces irritation from coughing, swallowing, and acid reflux. The bark also contains tannins with mild astringent properties. No pharmacologically active compounds with systemic respiratory effects have been identified.
Who benefits most
Adults with sore throat, hoarseness, or dry cough seeking soothing herbal support. Not a substitute for medical evaluation of persistent throat pain, dysphagia, or respiratory infection.
Dosage and form
400 mg is the typical effective range. Forms matter: choose standardised extracts or highly bioavailable delivery formats (see the Forms tab). Take as directed.
Side effects and cautions
Slows absorption of meds — separate by 2 hours. Avoid if you: Avoid during pregnancy (folklore suggests potential miscarriage risk when inserted vaginally; oral safety is undetermined). Use caution with other medications—mucilage can reduce absorption. Take medications 2 hours before or 4 hours after slippery elm..
The evidence
Human clinical trials and mechanistic research support the use of Slippery Elm for its primary indication. See the Research tab for full citations and study summaries.
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