This section is from the book "Materia Medica And Therapeutics: An Introduction to the National Treatment of Disease", by John Mitchell Bruce. Also available from Amazon: The pharmacology and therapeutics of the materia medica.
The flowers and tops of Brayera anthelmintica. Collected in Abyssinia.
Characters. - Flowers small, reddish brown, on hairy stalks, outer limb of calyx five-parted, the segments oblong or oblong-lanceolate, reticulated, with a fragrant odour and a disagreeable acrid taste.
Infusum Cusso. - 1/4 oz. in 4 fl.oz. boiling water for one dose; to be drunk without straining.
Taken in the large doses necessary, kousso is apt to cause nausea, vomiting, colic, and slight diarrhoea. Its principal action is as an anthelmintic, the tape-worms (Taenia solium, Taenia mediocanellata, and Bothryocephalus latus) being readily killed by it. It is used for this purpose only, and rarely in England. It may or may not require the assistance of a purgative to expel the dead worm. The powdered flowers, either in compressed masses or suspended in an aromatic water, are said to be much more active than the officinal infusion.