Scrophularia root, also known as Chinese figwort or Scrophularia ningpoensis, is a herb commonly used in traditional Chinese medicine (TCM). In TCM, scrophularia root is considered to "clear heat," "cool the blood," and "resolve toxicity," which are concepts often associated with supporting the body’s lymphatic and immune functions. The lymphatic system, although not explicitly described in TCM terminology, is thought to overlap with what TCM refers to as the body’s capacity to manage fluids, clear toxins, and support immune response.

The traditional use of scrophularia root for lymphatic support is primarily based on its reputed ability to reduce swellings (such as in the throat and glands), clear heat from the blood, and treat inflammatory skin and glandular conditions. These actions have led practitioners to recommend it for issues like swollen lymph nodes, sore throat, and other conditions interpreted as lymphatic congestion.

However, scientific studies directly investigating scrophularia root’s effects on the lymphatic system are limited. While some research has shown that extracts of Scrophularia species possess anti-inflammatory and immunomodulatory properties in vitro and in animal models, there is currently insufficient clinical evidence to confirm its efficacy for lymphatic health in humans. Thus, its reputation for supporting the lymphatic system rests primarily on a long history of traditional use rather than robust scientific validation.