Lippia mexicana (Phyla scaberrima) - Lippia
"CONSTITUENTS: -
PREPARATIONS: Concentrated tincture, miscible with water without material precipitation. Four parts of the tincture equal one of the drug; dose: one-half to one dram. Fluid Extract Lippia; dose: ten to twenty minims.
Therapy: It is useful in asthma and chronic bronchitis. It is peculiarly sedative to the entire mucous surfaces of the post-nasal region and bronchial tubes. It is soothing, expectorant, and relieves irritability of these surfaces. It quiets hacking cough and chronic bronchial cough of any character. The experience of the writer has proven it specific in the peculiar, deep, resonant, barking, winter cough, without secretion, common to many ladies in the northern States, usually absent in the summer, very persistent, stubborn and difficult to cure. This cough, lippia has cured for the writer in several cases. In every case the cough failed to recur in the following winter, as it had recurred before in several preceding winters."
(Finley Ellingwood: The American Materia Medica, Therapeutics and Pharmacognosy, 1915)