Elecampane (Inula helenium) is a perennial herb traditionally used in Western herbal medicine, mostly for respiratory health due to its expectorant and antimicrobial properties. Its use in supporting the lymphatic system, however, is rooted primarily in traditional herbal practices rather than scientific research. Herbalists have sometimes recommended elecampane as a "lymphatic cleanser" or to support the movement of lymph, particularly in cases of chronic respiratory congestion or skin conditions believed to be related to lymphatic sluggishness. These recommendations are based on its general stimulating and tonic effects, as well as the doctrine of signatures and empirical observations rather than on rigorous scientific studies.

A review of the modern scientific literature reveals almost no direct studies evaluating elecampane’s effects on lymphatic function in humans or animals. Most research focuses on its anti-inflammatory, antimicrobial, and expectorant actions, which may have indirect effects on tissues that interact with the lymphatic system, but this is not the same as direct lymphatic support. Thus, while elecampane has a long history of use in herbal traditions for general "cleansing" purposes, there is minimal evidence to support its use specifically for the lymphatic system, and this use remains largely theoretical and anecdotal.