This section is from the book "A Text-Book Of Materia Medica And Pharmacy For Medical Students", by Velyien Ewart Henderson. Also available from Amazon: A Text-Book of Materia Medica and Pharmacy for Medical Students.
Catechu. Catechu. Dose, 5 - 15 grs.; 3 - 10 dgms. An extract obtained from the leaves and young shoots of Uncaria Gambier. In cubes, about an inch on the side, often agglutinated, deep reddish-brown externally, porous and friable, consisting largely of minute crystals; taste, at first bitter and astringent, subsequently sweetish; odourless. Active principles catechin and catechu-tannic acid.
Incompatibles, gelatin, albumin, sulphuric acid and ferric salts.
1Pulvis Catechu Compositus. Dose, 10 - 40 grs.; 1/2 - 2 1/2 gms. - 40; Kino, 20; Krameria Root, 20; Cinnamon Bark, 10; Nutmeg, 10.
2Tinctura Catechu. Dose, 30 - 60 min.; 2 - 4 c.c. - 20; Cinnamon Bark, 5; Alcohol 60%, 100: by maceration.
3Trochiscus Catechu. 1 gr. in a lozenge made with the Simple Basis.
Cera Alba. White Beeswax. Yellow Beeswax bleached. Hard, nearly white, translucent masses.