Synopsis

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

Horehound (Marrubium vulgare) has a long history of use in traditional herbal medicine, particularly for respiratory ailments such as cough, bronchitis, and wheezing. Historical records from Europe and the Mediterranean region mention horehound as an ingredient in syrups, teas, and lozenges intended to soothe the throat and relieve symptoms of airway irritation. The plant contains compounds such as marrubiin, which is believed to stimulate bronchial secretions, potentially making mucus less viscous and easier to expel.

Despite this widespread traditional use, scientific validation is limited. Few clinical studies have rigorously tested horehound for its efficacy in treating wheezing or lower airway obstruction. Most existing evidence comes from animal studies or in vitro research, where horehound extracts have shown mild expectorant and antispasmodic effects. However, the translation of these findings to clinical efficacy in humans remains uncertain. Consequently, regulatory bodies such as the European Medicines Agency recognize horehound for use in traditional herbal medicinal products for cough and colds, but not specifically for wheezing or asthma. Overall, while horehound's traditional use for respiratory complaints is well documented, robust scientific evidence for its effectiveness in treating wheezing is lacking.

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Other ingredients used for Wheezing

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Products containing horehound

Nature's Sunshine Sinus Support EF