Decoctum Agropyri. Br. Decoction of Couch Grass.
[Decoction of Triticum]
"Couch Grass, cut small, 50 grammes; Distilled Water sufficient to produce 1000 millilitres. Boil the Couch Grass with twelve hundred millilitres of Distilled Water, in a suitable vessel, for ten minutes; strain; if necessary pour sufficient Distilled Water over the contents of the strainer to produce the required volume." Br.
This decoction was transferred from the British Addendum (1900) to the British Pharm. (1914). It is used in cystitis and urinary diseases. Dose, four fluidrachms to two fluidounces (15-60 mils).