This section is from the book "A Practitioner's Handbook Of Materia Medica And Therapeutics", by Thos. S. Blair. Also available from Amazon: A Practitioner's handbook of Materia Medica and Therapeutics.
Gambir, Pale Catechu. This substance is now official, displacing Acacia catechu, formerly in use. The new compound tincture is given in teaspoonful doses. It contains, besides gambir, cinnamon and spirit, and is a grateful astringent carminative. The British Pharmacopceia rejected catechu and substituted gambir some years ago; and our change is a wise one, since catechu is not so sweet as is gambir, and contains substances more apt to produce spontaneous gelatinization.