Ivy, typically referring to Hedera helix (English ivy), has a long history of use in traditional herbal medicine, particularly in Europe. Historically, it has been used for various respiratory complaints, including pleurisy, bronchitis, and coughs. The rationale behind its use for pleurisy—a painful inflammation of the pleura, the membrane surrounding the lungs—stems from its reputed expectorant, anti-inflammatory, and spasmolytic properties. Ivy leaves were prepared as teas, tinctures, or topical applications to help alleviate chest pain and support mucus clearance.

While modern herbal medicine continues to use ivy leaf extract (primarily for cough and bronchitis), there is very limited direct scientific research specifically addressing its efficacy for pleurisy. Some preclinical and clinical studies suggest that ivy leaf extract can help loosen bronchial secretions and ease coughing, which may provide indirect symptomatic relief for some respiratory conditions. However, robust clinical trials specifically investigating ivy for pleurisy are lacking. Therefore, current use for pleurisy is justified mainly by tradition and historical precedent, rather than scientific validation.

In summary, while there is a traditional basis for using ivy in pleurisy and related respiratory ailments, scientific evidence specific to pleurisy is weak or absent. Its use should not replace medical treatment for pleurisy, which can be a serious condition requiring professional care.