Decoctum Tussilaginis, B.P.C. Decoction of Coltsfoot.

Botanical name: 

Format explanation

(Some plants in the Asteraceae contain hepatotoxic pyrrolizidine alkaloids. Coltsfoot is among them. More info here: Livertoxic PAs --Henriette.)
Related entry: Tussilago

Coltsfoot Leaves 5.00 | 1 ounce
Distilled Water ... to 100.00 | to 20 fl. ounces

Add the coltsfoot leaves to 120 (24 fluid ounces) of distilled water, and boil for ten minutes, strain, and make up to the required volume, if necessary, by passing distilled water through the strainer.
Dose.—60 to 120 mils (2 to 4 fluid ounces) or more.

The British Pharmaceutical Codex, 1911, was published by direction of the Council of the Pharmaceutical Society of Great Britain.