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Potassium iodide in dermatology: a 19th century drug for the 21st century-uses, pharmacology, adverse effects, and contraindications.

Journal of the American Academy of Dermatology (2000-09-27)
J B Sterling, W R Heymann
ABSTRACT

Potassium iodide (KI) is a useful drug in the dermatologic armamentarium. It is successfully used for inflammatory dermatoses, most notably erythema nodosum, subacute nodular migratory panniculitis, nodular vasculitis, erythema multiforme, and Sweet's syndrome. KI is also successfully used for cutaneous and lymphocutaneous sporotrichosis. The precise mechanism by which KI acts is unknown. Although many minor side effects are common with this drug, major side effects can occur in pregnant patients and those with a history of kidney or thyroid disease. This article reviews the pharmacology, mechanism of action, indications, contraindications, and adverse effects of KI as a therapeutic agent.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Potassium iodide, ACS reagent, ≥99.0%
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Potassium iodide, ReagentPlus®, 99%
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Potassium iodide, anhydrous, free-flowing, Redi-Dri, ACS reagent, ≥99%
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Potassium iodide, puriss. p.a., reag. ISO, reag. Ph. Eur., ≥99.0%
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Gold etchant, standard
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Potassium iodide, BioUltra, ≥99.5% (AT)
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Potassium iodide, puriss., meets analytical specification of Ph. Eur. BP, USP, 99.0-100.5% (calc. to the dried substance)
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Potassium iodide, ≥99.99% trace metals basis
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Potassium Iodide, Pharmaceutical Secondary Standard; Certified Reference Material
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Potassium iodide, BioXtra, ≥99.0%
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Potassium iodide, tested according to Ph. Eur.
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Potassium iodide, AnhydroBeads, −10 mesh, 99.998% trace metals basis