Safety is relative.You need to weigh the safety of the treatment vs. the ability to save lives with it. The FDA this spring approved emergency use of HCQ and azithromycin for COVID 19. They retracted that emergency authorization when a number of clinical studies that didn't include zinc suggest no significant benefits from HCQ in the treatment of COVID 19. Right now, hundreds of thousands, maybe even millions of lupus and arthritis patients are taking HCQ. In terms of relative safety, the threat of COVID 19 is far greater to one's life than lupus or arthritis. Do you see where I'm going? If HCQ is safe enough taken over a long period of time for these less threatening ailments, it ought to be safe enough to be taken in low dose for 5 days by a COVID 19 patient.