Evidence supporting the use of: Marshmallow
For the body system: Bronchials

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Synopsis

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

Marshmallow root (Althaea officinalis) has a long history of traditional use for supporting respiratory health, including the bronchial system. In traditional herbal medicine, especially in Europe and the Middle East, marshmallow has been used for centuries as a soothing agent for coughs, sore throats, and bronchial irritation. The root contains mucilage, a gelatinous substance that is believed to coat and soothe mucous membranes in the respiratory tract. Historical texts and traditional herbal pharmacopeias often include marshmallow as a demulcent—a substance that relieves irritation—prescribed for bronchitis and other upper respiratory conditions.

While there is a well-established tradition of using marshmallow for bronchial and respiratory complaints, scientific evidence is limited. Some laboratory studies suggest that marshmallow extracts can have anti-inflammatory and soothing effects, but rigorous clinical trials in humans are lacking. The evidence that does exist focuses mainly on its ability to reduce irritation and inflammation in mucous membranes, rather than directly treating bronchial diseases. Therefore, while marshmallow’s use for supporting the bronchial system is justified by traditional practice, its efficacy according to modern scientific standards remains largely unproven.

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