Synopsis

Source of validity: Traditional
Rating (out of 5): 1

Green onion (Allium fistulosum), also known as scallion or spring onion, has a long history of use in traditional medicine systems, particularly in East Asia. In Traditional Chinese Medicine (TCM), green onion is considered warming and is used in various herbal concoctions to help "dispel wind-cold," a term that refers to certain presentations of respiratory illnesses such as the early stages of bronchitis, colds, or influenza. The green onion is often combined with ginger or other herbs in decoctions and teas.

However, the scientific evidence supporting the use of green onion specifically for bronchitis is very limited. While some laboratory studies on Allium species (including garlic and green onion) have shown mild antimicrobial and anti-inflammatory effects, there are no high-quality clinical trials demonstrating that green onion can effectively treat or relieve bronchitis in humans. The tradition stems more from historical practice and theoretical frameworks in TCM than from rigorous biomedical research.

In summary, the use of green onion for bronchitis is primarily justified by traditional use, with scant scientific validation to date. The evidence supporting its efficacy for this condition is weak (rated 1/5), and it should not be relied upon as a primary treatment for bronchitis according to current scientific standards.

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