Evidence supporting the use of: Marshmallow
For the body system: Vocal Cords

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Synopsis

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

Marshmallow root (Althaea officinalis) has a long history of use in traditional herbal medicine for soothing irritated mucous membranes, including those of the throat and vocal cords. The plant contains mucilage, a gelatinous substance that can coat and soothe the throat lining. Traditional herbalists have recommended marshmallow root preparations—such as teas, syrups, or lozenges—for people experiencing hoarseness, sore throats, or vocal strain, believing the mucilage helps to reduce irritation and promote comfort during speaking or singing.

Modern scientific studies directly evaluating marshmallow for vocal cord health specifically are limited. However, some laboratory and animal studies support the demulcent (soothing) and anti-inflammatory properties of marshmallow root on mucous membranes. Small clinical studies have shown benefits for sore throat and dry cough, symptoms that may overlap with vocal cord irritation. There is insufficient high-quality evidence to definitively state that marshmallow root supports vocal cord health, but its traditional use is well-documented and the mechanism of action (mucilage coating) is plausible.

In summary, the use of marshmallow root to support the vocal cords is justified primarily by tradition, with some mechanistic and preliminary scientific support, but lacks robust clinical trials specifically targeting vocal cord health.

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