This section is from the book "Botanic Drugs Their Materia Medica, Pharmacology and Therapeutics", by Thomas S. Blair. Also available from Amazon: Botanic Drugs, Their Materia Medica, Pharmacology and Therapeutics.
The oil, in an average dose of 8 minims, is an effective urinary antiseptic and is eliminated chiefly by the kidneys. When the urine is alkaline or neutral, hexamethylenamine is not effective, but santal oil is. In markedly acid urine hexamethylenamine is more markedly antiseptic than is santal oil.
The oil is valued in the treatment of subacute and chronic urethritis, gonorrhea, and cystitis. The oil is, however, very apt to be disturbing to the stomach, and sometimes it induces vesical or renal irritation, with dysuria.
Arheol, Santalol, is the chief constituent of sandalwood; it is less disturbing than the oil and comes in 3-grain capsules, of which 9 to 12 are taken in a day.
Carbosant, Santalyl carbonate, is chemically broken up in the intestine, and then it acts as does santalol. The dose is 10 minims 3 times a day.
Santyl, Santalyl salicylate, also passes the stomach unchanged and is not irritating. The dose is 24 minims 3 times a day. It is put up in 8-minim capsules, three being taken at one dose.
Thyresol, methyl ether of santalol, is excreted as a glycuronic compound. It is relatively non-irritating. Dose, in 5-grain pearls, 2 or 3 pearls 3 or 4 times a day.