This is made, according to the U. S. Pharmacopoeia, by rubbing half a drachm of iodine and a drachm of iodide of potassium, first with a fluidrachm of alcohol, and then with two ounces of lard.

The compound is preferable to the simple ointment, as the iodide of potassium contained in it is probably more easily absorbed than free iodine; and absorption is what is aimed at in the employment of either. it is very often used to aid the internal use of the medicine in bringing the system under its influence. it may be applied in the same quantity and method as the simple ointment. Both may be used as dressings for indolent scrofulous ulcers.