$EXEL Unfortunately, there are folks that think they're smarter than the doctors. There's a story out of Phoenix about a couple that bought chloroquine phosphate, probably from a pet store because it's used to clean fish tanks, and self dosed to prevent C19 without symptoms. Husband died, wife is in serious condition. Very unfortunate, this is what fear looks like. Akin to assuming all chlorides are edible because salt is sodium chloride. HydroxyChloroquine is a prescribed Rx.