Corktree, most commonly referring to Phellodendron amurense (Amur corktree), has a well-documented history of use in Traditional Chinese Medicine (TCM). In TCM, it is known as "Huang Bai" and is often employed for its abilities to clear heat and dry dampness, which are traditional concepts related to various ailments, including support for the respiratory system and the Lungs. Specifically, Huang Bai is sometimes included in herbal formulas intended to address conditions such as cough, bronchitis, or other heat-related lung complaints.

However, while preclinical studies have demonstrated that extracts of Phellodendron possess anti-inflammatory, antibacterial, and antioxidant properties, direct scientific evidence supporting its efficacy in supporting or treating diseases of the Lungs in humans is limited. Most clinical research focuses on other purported benefits, such as effects on metabolic syndrome, inflammation, or skin conditions, rather than direct respiratory outcomes. Therefore, the use of corktree to support the Lungs is primarily justified by historical and traditional applications rather than robust scientific validation.

In summary, while Phellodendron amurense is traditionally used to support Lung health in TCM, scientific research confirming its effectiveness for this specific use is currently insufficient, and the evidence is best described as traditional with a moderate degree of support.