Action and Uses: Introduced in common with other hypophosphites as a cure for tuberculosis; since used as “nerve-foods.” There is no proof that the hypophosphites exert any physiologic effect, influence any pathologic process, or have any food value.
Dosage: 0.5 Gm. or 8 grains (U.S.P.).
*Potassii Iodidum (Pot. Iod.), Potassium Iodide, U.S.P.—KI.
Transparent, translucent or opaque crystals or white granular powder, with a pungent, saline, afterward bitter taste. Very soluble in water (1:0.7) and soluble in alcohol (1:22). Incompatible with mineral acids and oxidizing agents and should not be prescribed in solution with alkaloids or alkaloid-containing drugs.
Action and Uses: Saline expectorant, especially in asthma and chronic bronchitis; diuretic; antisyphilitic; “alterative” in rheumatic conditions, sclerosis, etc.
Dosage: 0.3 Gm. or 5 grains (U.S.P.); best administered in simple solution and well diluted; in lues the dose should be gradually increased to the limit of tolerance.
Unguentum Potassii Iodidi (Ung. Pot. Iod.), Ointment of Potassium Iodide, N.F.—Potassium iodide (10%), sodium thiosulphate (1%), water and benzoinated lard.
Uses: An irrational method of administering potassium iodide, as none of the drug is absorbed through the skin.
Potassi Nitras (Pot. Nitras), Potassium Nitrate, U.S.P. (Saltpetre).—KNO3.
Transparent crystals or white powder, odorless and having a cooling saline taste. Freely soluble in water (1:2.8) and slightly soluble in alcohol (1:620).