C. B. Williams* observes that the Iodide of Potassium has been found useful; in some instances, seeming to restrain low degrees of inflammation affecting the fibrous portions of the air-tubes; and probably, in some degree, retarding the process of induration, to which they tend. Dose, gr. ij. - iij. thrice daily. In Emphysema of the Lungs, he found considerable relief, with marked improvement of the physical signs, follow the use of small doses of the Iodide, in conjunction with Liq. PotassAe, Squills, &c. With regard to its use in Phthisis, Dr. Cotton draws the following conclusions: - 1. Iodide of Potassium, given in moderate doses to consumptive patients, occasionally produces dyspeptic symptoms, but more commonly is unattended by any marked result, either in one direction or the other. 2. Under its use the weight is seldom increased, but either remains stationary or is diminished, the latter effect being of the most frequent occurrence. In that form of Phthisis which is associated with Syphilitic taint, it is a valuable remedy, and may be given in conjunction with Iron and Cod Liver Oil.
Williams and others. Dr. Hyde Salter states that it entirely fails in a great many cases, while those in which its success is complete are comparatively few. Sometimes, however, most striking results attend its use. The benefit derived does not seem to be due to its influence on chronic bronchitis, or on a gouty or rheumatic-gouty condition. It must be continued some time before it begins to manifest its effect.
Melsens§ advises the use of very small and cautiously-increased doses of the Iodide of Potash, in cases of chronic poisoning by lead. The theory of its action is, that it renders soluble metallic substances, which might otherwise remain in the system, by associating them with another substance that is readily eliminated by the organs of secretion. This theory, if correct, shows the necessity of caution in the use of the remedy; which, if given in large doses, would favour the absorption into the system of a powerful poison. In Mercurial Palsy and Tremors, the Iodide, acting on these principles, was found beneficial.
In Scabies, the external application of a solution of the Iodide (3j. ad Aq. fviij. - fxvj.) has been advised by Dr. Ogier Ward,|| and others. Dr. Albin Gras found that the Acarus lives but four or six minutes in a concentrated solution of Potas. Iod.; whilst it lives sixteen hours in the vapour of Sulphur, two hours in Olive Oil, one hour in Acetate of Lead, one hour in powdered Sulphur, twenty minutes in Vinegar and Spirits of Wine, and twelve minutes in a solution of the Sulphuret of Potash. Dr. Schedel,* who quotes this statement, advises its use (3ss. to j. of Lard). Cazenave recommends the following lotion: -Potas. Iod., Sulphuris Iod. aa 3j., Aq. Dest. fiv., M. ft. lotio.
* Lib. of Med, vol. iii. pp. 81 and 159.
Mod. Times and Gaz., Dec. 24, 1859.
Lancet, Jan. 23, 1864. § Bull, de l'Acad Roy. de Med, 1849. || Lancet, April 4, 1846.
2287. In Lepra Tuberculosa, Elephantiasis, Lepra, when the disease is limited in extent, to the face or ears for example, Dr. Schedel states that an ointment of Iodide of Potassium (j. ad Ung. j.) is often very beneficial, the vapour douche being used at the same time. In Pemphigus and in Ecthyma Cachecticum, the internal use of this salt is recommended by Mr. E. Wilson,
2288. In Sycosis or Mentagra, local applications are of comparatively little service, unless combined with the internal use of alteratives; of these, the Iodide, in doses of gr. iv., in Decoct. SarzAe (fl. oz. ij.), is one of the most effectual. In Simple Ulcers of the Legs, Drs. Tige and Trastour advocate the internal use of the Iodide in doses of gr. xv. - xx. in water (fss.) thrice daily before meals. It is to be used in addition to local applications, the operation of which it seems to facilitate.