Potassium iodide is an important anti-fungal drug listed in the World Health Organization [WHO] essential drug list, Category D in pregnancy widely used off-label in cutaneous sporotrichosis [including fixed and lymphocutaneous types], basidiobolomycosis, subcutaneous granulomas due to Pythium insidiosum, erythema nodosum, and erythema induratum of Bazin in developing countries with more and more reports published, although the currently available evidence is insufficient to determine potassium iodide as first-line treatment for these infections [1,2].
It’s presented as white crystals, water-soluble, with a molecular weight of 166, it contains 76% of iodium and 23% of potassium, this solution is neutral or slighly alkaline [3,4].