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Thuja occidentalis. A tree the leaves and twigs of which contain flavonoids, glycosides, mucilage and volatile oils (primarily thujone, but also borneol, camphor, fenchone, limonene, myrcene and pinene). Thuja is anthelmintic, expectorant, and stimulates smooth muscle; it was used by Native Americans to stimulate menstruation, and has been used topically by Western herbalists for skin infections and for rheumatic pain.
A remedy used for brittle nails, caries, menstrual dysfunction, oily skin and warts.
Thuja orientalis, see there.