Synopsis

Source of validity: Traditional
Rating (out of 5): 3

Iceland Moss (Cetraria islandica) has a long history of traditional use in Europe, particularly in Nordic countries, for soothing sore throats and coughs. The plant is rich in mucilage, a gelatinous substance that forms a protective coating over mucous membranes. This coating is thought to relieve irritation and dryness in the throat, thereby alleviating discomfort associated with sore throats. Historical records from European herbal medicine texts, dating back centuries, describe Iceland Moss as a demulcent and expectorant, recommending it for various respiratory complaints, including sore throat, cough, and bronchitis.

Modern scientific studies on Iceland Moss for sore throat are limited. Some in vitro studies suggest mild antimicrobial and anti-inflammatory effects, and the mucilage content has been shown to possess soothing properties. However, there is a lack of robust clinical trials directly evaluating its efficacy in treating sore throat in humans. The traditional use has led to its inclusion in various over-the-counter lozenges and syrups, especially in Europe. Overall, while scientific validation remains modest, the traditional use is well-documented and has influenced its continued use in herbal remedies for sore throat.

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