Evidence supporting the use of: Glehnia root
For the body system: Bronchials

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Synopsis

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

Glehnia root (Glehnia littoralis), also known as Bei Sha Shen in traditional Chinese medicine (TCM), has a long history of use for supporting the respiratory system, particularly the lungs and bronchial passages. In TCM, glehnia root is considered to nourish lung yin and is commonly prescribed to relieve dry cough, sore throat, and hoarseness—symptoms often associated with bronchial irritation or dryness. Classical Chinese medical texts and modern TCM pharmacopeias consistently list glehnia root as a remedy for conditions involving the lungs and upper respiratory tract.

There is limited but growing scientific investigation into the pharmacological effects of glehnia root. Some in vitro studies have identified antioxidant, anti-inflammatory, and immunomodulatory properties, which may play a role in its traditional use for respiratory health. However, high-quality clinical trials in humans are lacking, and the majority of evidence remains anecdotal or derived from traditional use patterns rather than robust scientific validation. In summary, the use of glehnia root to support the bronchial system is primarily justified by traditional medicine, with moderate support from preclinical research but insufficient clinical evidence to rate it higher.

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