Synopsis

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

Scallion (Allium fistulosum), also known as green onion, has been used in traditional medicine systems, particularly in East Asia, for the treatment of congestion and sinus issues. In Traditional Chinese Medicine (TCM), scallion is considered to have warming properties and is sometimes included in herbal formulations to help "disperse wind-cold" conditions, which can manifest as nasal congestion, runny nose, and sinus discomfort. The bulb is believed to promote sweating and help open up the nasal passages, thus alleviating congestion. Historical texts and folk remedies commonly mention the use of scallion decoctions or poultices for respiratory complaints.

However, scientific evidence supporting the effectiveness of scallion for sinus congestion is limited. While scallion and related Allium species contain sulfur compounds (such as allicin) that possess mild antimicrobial and anti-inflammatory properties, there are no robust clinical studies demonstrating its efficacy in relieving nasal or sinus congestion in humans. The use of scallion for this purpose remains primarily grounded in tradition rather than validated by modern scientific research. Therefore, while its traditional use is well-documented, the evidence supporting its effectiveness is modest and not based on rigorous clinical data.

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