Evidence supporting the use of: Slippery elm bark
For the health condition: Laryngitis

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Synopsis

Source of validity: Traditional
Rating (out of 5): 2

Slippery elm bark (Ulmus rubra) has a long history of use in traditional herbal medicine, particularly among Native American tribes and later in Western herbalism. It is most commonly used as a soothing demulcent, meaning it coats and soothes mucous membranes. For laryngitis, which involves inflammation and irritation of the larynx (voice box) and associated tissues, traditional practitioners have recommended slippery elm in the form of teas, lozenges, or syrups to help relieve throat discomfort and hoarseness. The mucilage content in slippery elm is thought to create a soothing barrier over the inflamed tissues, potentially reducing irritation and aiding in comfort.

Despite its widespread use in folk medicine, there is limited scientific evidence specifically supporting the efficacy of slippery elm for laryngitis. Most modern references and herbal guides cite historical use and anecdotal reports rather than results from controlled clinical trials. Some small studies and in vitro research suggest that slippery elm’s mucilage can have soothing effects on irritated mucous membranes, but these findings are not laryngitis-specific and are generally low quality. Major medical organizations do not formally recognize slippery elm as a treatment for laryngitis, but it remains popular as an over-the-counter herbal remedy.

In summary, the use of slippery elm bark for laryngitis is primarily justified by tradition and anecdote, with scientific evidence remaining weak and indirect.

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