Tansy (Tanacetum Vulgare)

The parts used are the leaves and flowers which contain the active ingredients sesquiterpene lactones, volatile oil and flavonoids.


I was in two minds whether to write about Tansy from a safety point of view as I do not advise self medication with it as it is such a strong herb. But as we had been looking at it on the shingle beach and it is so pretty and very interesting I thought I would.

It is used as an “Emmenagogue” meaning it is used in the absence of menstruation to bring on and help regulate periods and to expel worms from the gut.

If you ever see an herb has the ability to expel worms you will know that it is a very strong herb and must not be experimented with.

The same action which helps expel worms from the body may also cause abortion so it absolutely must not be taken in pregnancy.

Linda Bostock

Medical Herbalist/Herbal Health Information