Evidence supporting the use of: Maidenhair Fern
For the body system: Vocal Cords

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Synopsis

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

Maidenhair Fern (Adiantum capillus-veneris) has a longstanding history in herbal medicine, particularly in traditional European, Middle Eastern, and Ayurvedic systems. Traditionally, it has been used as a remedy for respiratory problems, including hoarseness, cough, and loss of voice, which are often associated with irritation or strain of the vocal cords. The plant has been prepared as infusions, syrups, or teas to soothe irritated throats and to support the health of the upper respiratory tract.

Historical texts such as Dioscorides’ De Materia Medica and various medieval pharmacopeias mention Maidenhair Fern as an ingredient in “syropus capillaire” (Capillaire syrup), a popular throat-soothing preparation. In folk medicine, it was valued for its demulcent (soothing), expectorant, and mild anti-inflammatory properties.

However, modern scientific research validating these specific uses is very limited. Most support for Maidenhair Fern’s benefit to vocal cords is anecdotal or based on its traditional reputation rather than rigorous clinical evidence. Therefore, while its use for vocal cord support is justified by tradition and historic use, strong scientific support is lacking, resulting in a moderate evidence rating.

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