This section is from the book "Materia Medica And Therapeutics: An Introduction to the National Treatment of Disease", by John Mitchell Bruce. Also available from Amazon: The pharmacology and therapeutics of the materia medica.
The entire plant, Ophelia chirata. Collected in Northern India.
Characters.-Stems about three feet long, of the thickness of a goose-quill, round, smooth, pale brown, branched; branches opposite; flowers small, numerous, panicled; the whole plant intensely bitter.
Composition.-Chiretta contains an active bitter principle, chiratin, combined with ophelic acid, as well as the ordinary constituents of plants.
Substances resembling Chiretta: Dulcamara, Lobelia, Cannabis, which have no bitter taste.
1. Infusum Chiratae-1 in 40. Dose, 1 to 2 fl.oz.
2. Tinctura Chiratae,-1 in 8. Dose, 15 to 60 min.