Evidence supporting the use of: Tansy
For the health condition: Lice

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Synopsis

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

Tansy (Tanacetum vulgare) has a long history of traditional use as an herbal remedy for various ailments, including as an insect repellent and treatment for lice. In European folk medicine, tansy leaves and flowers were often used externally in washes or infusions to help repel or kill lice and other external parasites. The plant contains volatile oils such as thujone and camphor, which are believed to have insecticidal properties. Historical herbal texts from the Middle Ages and early modern period frequently mention tansy as a topical application for lice infestations. However, while the traditional use is well-documented, there is little to no modern scientific evidence validating its efficacy or safety for this purpose. The available research on tansy's bioactive compounds mainly concerns general insecticidal activities, not specifically lice, and focuses more on agricultural pests. Furthermore, tansy can be toxic, especially if ingested, and its topical use can cause skin irritation or allergic reactions. Therefore, while tansy's use against lice is rooted in tradition, it lacks robust scientific backing, and its potential risks may outweigh anecdotal benefits.

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