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

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Synopsis

Source of validity: Traditional
Rating (out of 5): 1

Slippery elm bark (Ulmus rubra) has been traditionally used in North American herbal medicine for a variety of respiratory conditions, including coughs, sore throats, and bronchitis. The inner bark contains mucilage, a gel-like substance that is thought to soothe mucous membranes and reduce irritation in the throat and airways. In the context of pertussis (whooping cough), slippery elm has been used historically by Native American tribes and later by early settlers as a palliative remedy to help ease persistent coughing and throat discomfort associated with the disease.

However, there is no robust scientific evidence supporting the efficacy of slippery elm bark specifically for pertussis. Most modern uses are extrapolated from its general demulcent (soothing) action rather than clinical trials or pharmacological studies targeting Bordetella pertussis infection or its characteristic symptoms. Contemporary medical guidelines do not recognize slippery elm as a treatment for pertussis, instead recommending antibiotics and supportive care. Thus, its use is justified primarily by tradition, with a low level of supporting evidence (rated 1 out of 5).

In summary, while slippery elm bark has a long tradition of use for soothing coughs and irritated throats, there is minimal scientific validation for its specific application in pertussis. Its role, if any, remains that of a supportive demulcent rather than a direct treatment for the underlying infection.

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