Decoctum Lappae, B.P.C. Decoction of Lappa.

Botanical name: 

Format explanation.
Related entry: Lappa

Synonym.—Decoction of Burdock.

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

Add the root to 150 (30 fluid ounces) of the distilled water and boil until the volume of the strained liquid is reduced to 100 (20 fluid ounces).
Dose.—30 to 120 mils (1 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.