Evidence supporting the use of: Osha
For the health condition: Cough (dry)

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Synopsis

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

Osha (Ligusticum porteri) has a long history of traditional use among Native American and Hispanic communities in North America for respiratory ailments, including dry coughs. The root is often prepared as a tea, tincture, or chewed directly to soothe throat irritation and coughs. Its use is based largely on ethnobotanical reports and traditional herbal medicinal practices rather than modern clinical studies. The traditional use is supported by anecdotal evidence and historical records, with some herbalists suggesting that Osha acts as an expectorant and soothes mucous membranes, which could help with dry cough. However, scientific validation for these claims remains limited. There are few, if any, rigorous clinical trials assessing Osha's efficacy for cough, and pharmacological studies are largely preliminary, identifying some compounds (such as ligustilide and other phthalides) with possible anti-inflammatory effects. Overall, while Osha is widely used in traditional medicine for dry cough, the current scientific evidence remains insufficient, and its effectiveness is primarily justified by tradition rather than modern research.

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Products containing Osha

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