Synopsis

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

Ivy (commonly referring to Hedera helix, or English ivy) is a traditional herbal remedy for cough, particularly those characterized as "damp" or productive, meaning coughs with mucus. Scientifically, there is moderate evidence supporting its efficacy. Ivy leaf extract contains saponins, which have been shown in in vitro and animal studies to exert expectorant (mucus-loosening) and bronchodilatory effects. Several clinical trials in adults and children have explored standardized ivy extracts (often as syrups) for acute bronchitis or productive cough. A 2017 Cochrane review noted that while some products containing ivy leaf may reduce cough frequency and improve symptoms compared to placebo, the overall quality of evidence is low to moderate, with methodological limitations in many studies. Nevertheless, countries such as Germany have approved ivy-based medicines for cough. The traditional use of ivy for respiratory conditions dates back centuries in European herbal medicine, which has informed its modern use. Ivy leaf preparations are generally considered safe when used as directed, though rare allergic reactions and gastrointestinal discomfort can occur. In summary, while more high-quality research would strengthen the evidence base, current data and a long history of use justify ivy’s use as a supportive treatment for "damp" or productive coughs.

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