Synopsis

Source of validity: Traditional
Rating (out of 5): 2

Oriental arborvitae (Platycladus orientalis, also known as Thuja orientalis) has a long history of use in traditional Chinese medicine (TCM), where it is known as "Ce Bai Ye." In TCM, it is used for a variety of ailments, including those believed to be associated with infections. Its leaves and cones are sometimes used as ingredients in herbal preparations intended to "clear heat" or "eliminate toxins," concepts that can correspond loosely to fighting infection in modern terms. Various traditional sources mention its use for conditions such as cough with yellow phlegm (sometimes interpreted as bacterial respiratory infections) and for external application on wounds and ulcers.

However, the modern scientific evidence specifically supporting its efficacy against bacterial infections is limited. Some in vitro studies have shown that extracts of Platycladus orientalis possess mild antibacterial activity against certain bacterial strains. These results suggest the presence of bioactive compounds such as flavonoids or essential oils with antibacterial properties. Nevertheless, there is a lack of rigorous clinical trials or substantial pharmacological studies validating its use as a primary treatment for bacterial infections in humans. Thus, while the traditional use is established, scientific validation remains minimal to moderate at best, and it should not be relied upon as a sole or primary treatment for bacterial infections.

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