ASTHMA. ELIXIR ASTHMATIC: Take liquorice root, (pounded pretty fine,) one pound; common honey, one pound; Benzoic acid, or flowers, half an ounce; gum opium, (good,) half an ounce; gum camphor, a third of an ounce; oil of anise, two drachmas(3.55 ml) ; common pearlash*, half an ounce; best old spirits, eight pints. To the liquorice, pounded pretty fine, add the other ingredients, taking care to pulverize the opium. When prepared, it should be kept in a warm place ten or twelve days, and decanted clear. The remaining liquor must be squeezed from the roots, and filtered through a piece of unsized paper.
A New Family Encyclopedia, 1833
*Potassium carbonate, potash, or salts of tartar