Description. For many years, tansy has been used as a medicinal herb. Irish folklore of the mid-1800s suggests bathing in a solution of tansy and salt as a cure for joint pain. Bitter tea made with the blossoms of tansy has been effectively used for centuries as an anthelmintic. The dried flowering herb is used for migraine, neuralgia, and rheumatism. Pregnant women should avoid this herb.The herb is tonic, cholagogic, stimulant and emmenagogue. In moderate doses, the plant and its essential oil are stomachic and cordial, being anti-flatulent and serving to allay spasms. In large doses, it becomes a violent irritant, and induces venous congestion of the abdominal organs. Use. In Scotland, an infusion of the dried flowers and seeds is given for gout. It is also valuable in hysteria and in kidney weaknesses. It forms an excellent and safe emmenagogue, and is of good service in low forms of fever, in ague and hysterical and nervous affections. As a diaphoretic nervine it is also useful. Tansy has been used externally with benefit for some eruptive diseases of the skin, and the green leaves, pounded and applied, will relieve sprains and allay the swelling. A hot infusion, as a fomentation to sprained and rheumatic parts, will in like manner give relief.
Attention! Before using any herbal products, make sure that you have full knowledge of how the herb works and any adverse reaction it may cause.