Dr. Grey AI

Slippery Elm

Slippery elm is a North American tree whose inner bark contains mucilage with soothing/coating properties. Traditionally used for sore throat, coughs, GI complaints, and skin irritation. NO GRADED OUTCOMES - clinical research is limited. The mucilage provides mechanical soothing, similar to other demulcent herbs. Generally safe. Often used in throat lozenges and teas. May interfere with medication absorption.

Quick Answer

What it is

Slippery elm is a North American tree whose inner bark contains mucilage with soothing/coating properties. Traditionally used for sore throat, coughs, GI complaints, and skin irritation.

Key findings

  • Grade D: Antioxidant Activity
  • Grade D: Sore Throat Symptom Relief
  • Grade D: Gastrointestinal Symptom Relief

Safety

No specific caution or interaction language was detected in the current summary/outcome notes.

ℹ️ Quick Facts: Slippery Elm

Quick Facts: Slippery Elm

  • Best Evidence:Grade D
  • Conditions Studied:3
  • Research Outcomes:4
  • Key Effect:Acute Respiratory Infection (ARI)
Outcomes by grade:
A0
B0
C0
D4
3 conditions · 4 outcomes

Detailed Outcomes

|
D
Antioxidant Activity
In vitro characterization of Flor-Essence, a compound herbal product containing slippery elm bark among other herbs, identified phenolic compounds with antioxidant properties. However, the contribution of slippery elm specifically versus other ingredients was not isolated, and no in vivo or clinical evidence exists.
small↑Improves
D
Sore Throat Symptom Relief
No controlled clinical trials specifically evaluate slippery elm for sore throat. The mucilage content provides a plausible mechanical coating/soothing mechanism, and slippery elm is a common ingredient in commercial throat lozenges, but direct clinical evidence is absent. Efficacy is inferred from traditional use and the well-characterized demulcent properties of plant mucilage.
small↓Worsens
D
Gastrointestinal Symptom Relief
No controlled clinical trials isolate slippery elm's effect on GI symptoms. Slippery elm is included in some combination products for IBS and reflux, but its individual contribution has not been established. The mucilage coating mechanism is plausible for symptomatic relief of GI irritation, but evidence remains limited to traditional use and mechanistic rationale.
small↓Worsens
D
Cough Symptom Relief
No clinical trials evaluate slippery elm for cough suppression or relief. Traditional use as a demulcent for coughs is long-standing, and the mucilage coating mechanism is plausible for soothing irritated upper airways, but no modern clinical data supports this indication specifically.
small↓Improves

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