Evidence supporting the use of: Osha
For the health condition: Congestion (sinus)

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Synopsis

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

Osha (Ligusticum porteri) has been traditionally used by various Native American and Hispanic cultures in North America for respiratory ailments, including sinus congestion, coughs, and colds. The root of the osha plant is typically prepared as a tea, tincture, or chewed directly to help clear the airways and ease breathing. The traditional rationale for its use stems from its aromatic and pungent qualities, which are believed to help loosen mucus and open nasal passages. Historical herbal texts and ethnobotanical surveys document its use as a “lung tonic” and for promoting expectoration.

However, scientific studies directly validating osha’s effectiveness for sinus congestion are very limited. While some laboratory research has identified the presence of volatile oils, such as ligustilide and other phthalides, and suggested possible antimicrobial or anti-inflammatory effects, there is insufficient clinical evidence to support its efficacy specifically for sinus congestion in humans. Thus, its use for this purpose is best characterized as traditional, with anecdotal and ethnobotanical support rather than robust scientific validation. Individuals considering osha for sinus congestion should be aware of the lack of clinical trials and consult healthcare professionals, especially due to potential allergies or interactions with other medications.

More about Osha
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Products containing Osha

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