Weren’t you questioning it’s safety dumbass? “Chloroquine is a cheap and a safe drug that has been used for more than 70 years and, therefore, it is potentially clinically applicable against the 2019-nCoV. “ Cardiotoxicity is quite rare and is associated with high doses over a prolonged period of time. Ironically at lower doses it can have the opposite effect! As to it’s effectiveness against coronavirus? That too is well documented.