Evidence supporting the use of: Euphorbia (unspecified)
For the health condition: Insect Repellant

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Synopsis

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

Euphorbia species have been traditionally used in various cultures as insect repellents, primarily due to their latex, which contains a variety of bioactive compounds. Historical records and ethnobotanical surveys document the use of Euphorbia plants—such as Euphorbia tirucalli and Euphorbia hirta—in repelling insects, especially in rural communities in Africa and Asia. The latex or crushed leaves are sometimes applied to the skin, burned, or placed in living areas to deter mosquitoes and other pests. This practice appears rooted in the plant’s strong odor and irritating sap, which is believed to discourage insects from biting or approaching.

However, scientific validation for the insect repellent efficacy of Euphorbia species is limited. Some laboratory studies have identified insecticidal or repellent activity in extracts from certain Euphorbia species, but these findings are preliminary and not widely replicated. The bioactive compounds—such as diterpenes and triterpenes—may contribute to the observed effects, but there is insufficient evidence to equate these effects with the safety and efficacy of conventional insect repellents. Moreover, the latex of many Euphorbia species is known to be a skin and eye irritant, limiting its practical use as a topical repellent.

In summary, the use of Euphorbia for insect repellency is primarily supported by traditional knowledge rather than robust scientific evidence, and caution is warranted due to potential toxicity.

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Products containing Euphorbia (unspecified)

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