Note 8 — Chapter VII

A drug known as the iodid of potash (or soda) is widely used in the treatment of syphilis, and especially of the late forms of the disease, such as gummas and gummatous sores. It has a peculiar effect on gummatous tissue, causing it to melt away, so to speak, and greatly hastening the healing process. So remarkable is this effect that it gives the impression that iodids are really curing the syphilis itself. It has been shown, however, that iodids have no effect on the germs of syphilis, and therefore on the cause of the disease, although they can promote the healing of the sores in the late stages. For this reason iodids must always be used in connection with mercury or salvarsan if the disease itself is to be influenced. It is occasionally difficult to get patients to understand this after they have once taken "drops," as the medicine is often called. Otherwise the use of iodids in syphilis is of medical rather than general interest.