This section is from the "A Handbook of Useful Drugs" book, by State Medical Examining and Licensing Boards.
Guaiacol carbonate is a white crystalline powder of neutral reaction, almost tasteless and odorless. It is practically insoluble in water, but is soluble in alcohol. It is decomposed readily with the liberation of guaiacol.
Incompatibilities: It is incompatible with alkaline hydroxids.
Action and Uses: Guaiacol carbonate is inactive until decomposed with the liberation of guaiacol. This occurs only in the presence of putrefactive organisms so that in the intestine it acts only when an antiseptic is needed and the excess fails to be absorbed and is excreted with the feces. Consequently it is ordinarily not poisonous. It is used internally as a tasteless and non-poisonous substitute for guaiacol.
Dosage: 1 gm. or 15 grains. It may be given in powders, capsules or cachets.
See Diacetylmorphinae Hydrochloridum.