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sulfiram

n. An ectoparasiticide used in the treatment and prevention of scabies.

Wikipedia
Sulfiram

Sulfiram ( INN) or monosulfiram, trade name Tetmosol, is an ectoparasiticide used in the treatment and prevention of scabies. It is usually sold as a solution or medicated soap, sometimes in combination with benzyl benzoate.

Sulfiram is now rarely used, but, , is still available in Brazil, India, and South Africa (as monotherapy).