Synopsis

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

Baphicacanthus cusia, also known as Isatis indigotica or Qing Dai (青黛), has a long history of use in traditional Chinese medicine (TCM), particularly for conditions involving inflammation, infections, and immune modulation. In the context of rhinitis, especially allergic or chronic rhinitis, Baphicacanthus cusia is incorporated into various herbal formulations to "clear heat," "disperse wind," and "relieve toxicity"—concepts rooted in TCM theory rather than modern immunology or pathophysiology.

Traditional texts and modern TCM practice sometimes recommend Qing Dai as part of multi-herb treatments for respiratory symptoms, including nasal congestion, runny nose, and sneezing, which are symptoms associated with rhinitis. However, direct scientific studies specifically investigating Baphicacanthus cusia’s efficacy in treating rhinitis are limited. While some pharmacological research has identified anti-inflammatory and immunomodulatory effects of its extracts, most of these studies focus on general inflammation, viral infections, or other conditions like psoriasis and chronic hepatitis, not rhinitis per se.

Therefore, the use of Baphicacanthus cusia for rhinitis is primarily justified by traditional practice and anecdotal clinical experience within TCM, rather than robust scientific validation. The evidence rating reflects the reliance on tradition and the lack of direct, high-quality clinical evidence supporting its specific use for rhinitis.

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