Tinctura Pyrethri. U. S., Br. Tincture of Pyrethrum. Tr. Pyreth. [Tincture of Pellitory]
Related entries: Pyrethrum
Teinture (alcoole) de Pyrethre (racine), Fr. Cod.; Bertramwurzeltinktur, G.
"Pyrethrum, in No. 50 powder, two hundred grammes [or 7 ounces av., 24 grains], to make one thousand mils [or 33 fluidounces, 6 ½ fluidrachms]. Prepare a Tincture by Type Process P. using alcohol as the menstruum." U. S.
"Pyrethrum Root, in No. 40 powder, 200 grammes; Alcohol (70 per cent.), sufficient to produce, 1000 millilitres. Moisten the powder with one hundred and fifty millilitres of the Alcohol, and complete the percolation process." Br.
This tincture is a powerful local irritant, and is an ingredient in several well-known mouth and tooth washes. For its uses, which are purely external, see Pyrethrum.