Synopsis

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

English Ivy (Hedera helix) leaf extract is commonly used in Europe and elsewhere as a herbal remedy for cough, particularly productive (wet or "damp") coughs. Its traditional use dates back centuries, but in recent decades, there has been a growing body of scientific studies evaluating its efficacy and safety. The primary active compounds in English Ivy are saponins, particularly α-hederin, which are believed to have expectorant, bronchodilatory, and anti-inflammatory effects. Clinical trials and meta-analyses have found that standardized ivy leaf extracts may help reduce cough frequency and severity, loosen mucus, and improve airway function in both children and adults with acute and chronic bronchitis. However, most studies are of moderate quality, often open-label or lacking large sample sizes and robust blinding. Systematic reviews, such as those published in "Phytomedicine" and the "Cochrane Database", conclude that while there is promising evidence for the use of ivy leaf extract in treating cough associated with respiratory tract infections, the overall quality of evidence is moderate and further high-quality trials are warranted. Regulatory agencies in Germany and elsewhere recognize ivy leaf extract as a treatment for productive cough, reflecting both its traditional and scientific support. Side effects are generally mild and rare. In summary, English Ivy’s use for damp cough is supported by moderate scientific evidence, with an established history of traditional use.

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