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Related to Chrysanthemum vulgare: Tanacetum vulgare, tansy
A perennial weed that contains bitter glycosides, citric acid, oxalic acid, terpenoids and thujone, a volatile oil that is antispasmodic. Tansy has been used as a vermifuge and for scabies, menstrual disorders and rheumatic pain.
Thujone is a known central nervous system depressant, and should not be used in pregnancy.
n See common tansy.