https://en.wikipedia.org/wiki/Ivermectin
Ivermectin is a medication that is used to treat parasite infestations.[6][7] In humans, this includes head lice, scabies, river blindness (onchocerciasis), strongyloidiasis, trichuriasis, ascariasis, and lymphatic filariasis.[6][8][9][10]
Ivermectin was discovered in 1975 and came into medical use in 1981.[14][15] It is on the World Health Organization's List of Essential Medicines.[16] Ivermectin is FDA-approved as an antiparasitic agent.[17] In 2018, it was the 420th most commonly prescribed medication in the United States, with more than one hundred thousand prescriptions.[18]