Slippery elm
Ulmus rubra Muhl.Ulmaceae // inner bark
Overview
Plant parts
inner bark
Known constituents
mucilage polysaccharides, tannins
Research corpus coverage
Chemistry notes
- CHEMISTRY: Relevant reported constituents include mucilage polysaccharides; tannins; constituent presence alone does not establish clinical efficacy.
Uses & Evidence
Traditional / historical use
Documented traditional use — not a claim of established efficacy.
TRADITIONAL: Slippery elm has been used for sore throat; cough; GI irritation; this records historical/traditional use and does not establish efficacy.
MODERATE · regulatory monograph · WHO Monographs on Selected Medicinal Plants
Modern evidence
EVIDENCE: For the major use set (sore throat; cough; GI irritation), the evidence assessment is insufficient: Insufficient clinical evidence; use is chiefly traditional.
LOW · regulatory monograph and mixed scientific literature · WHO Monographs on Selected Medicinal Plants
Preparation
Forms used traditionally
A listed form does not imply it suits every plant part, or that one preparation is interchangeable with another — see the plant’s own notes below.
PREPARATION: The medicinal material is inner bark; traditional and modern forms include decoction, tincture, powder/capsule, standardized extract. No dose or potency is specified.
MODERATE · regulatory monograph · EMA European Union herbal monographs and list entries
Preparation-specific evidence should not be generalized across extracts, teas, oils, or whole herb.
Safety
Additional safety notes (general, unstructured)
Free-text safety notes carried from their source — not broken out by species, route, or hazard type, and not equivalent to the structured records above. Each note names the kind of source it came from.
SAFETY: Major issues include Generally well tolerated; product purity concerns. Contraindications/cautions include None established beyond allergy.
MODERATE · observational/case series and expert review · LiverTox: Herbal and Dietary Supplements
Other elm barks are not necessarily equivalent; conservation and substitution matter.
SAFETY: Clinically relevant interaction concerns include Mucilage may delay oral drug absorption.
MODERATE · observational/case series and expert review · LiverTox: Herbal and Dietary Supplements
Some interactions are theoretical or based on case reports/pharmacokinetics rather than outcome trials.
SAFETY: Pregnancy/lactation reference: Insufficient pregnancy/lactation evidence.
MODERATE · regulatory monograph or evidence synthesis · WHO Monographs on Selected Medicinal Plants
Absence of evidence is not evidence of safety.
Preparation × species risk matrix
Unknown means insufficient evidence was located — not that a form is safe.
Cats
- tinctureCaution
- concentrated extractUnknown
- essential oilUnknown
- glyceriteUnknown
- infused oilUnknown
- salveUnknown
- smoke/combustionUnknown
- tea/infusionUnknown
- whole herbUnknown
Dogs
- tinctureCaution
- concentrated extractUnknown
- essential oilUnknown
- glyceriteUnknown
- infused oilUnknown
- salveUnknown
- smoke/combustionUnknown
- tea/infusionUnknown
- whole herbUnknown
Identity
- Synonym
GBIF resolves Ulmus fulva Michx. as a synonym of Ulmus rubra. The older name still appears in herbal and taxonomic literature.
HIGH · GBIF Species Match API
Botanical synonym
Ulmus fulva Michx.
Taxonomic identity note
- Slippery elm is treated here as Ulmus rubra Muhl. in the family Ulmaceae; recorded older names include Ulmus fulva Michx..
Sources
Research records are source-linked but may not yet be editorially reviewed.
WHO monograph
NIH LiverTox monograph
- Plants of the World Online1 claim
botanical taxonomy database
EMA monograph
- GBIF Species Match API1 claim
authoritative taxonomic database