I Africa, this medicine is bought over the counter. It is as safe as most medicines. NONE are perfect. Even aspirin, used to much daily, will make your stomach bleed. Not fatal, but even safe Aspirin, can cause a problem. Even water! Too much, you can "drown" from drinking too much water!
Hydroxychloroquine has been used for about 70 years. FDA approved. It is used for arthritis, LUPUS , some other auto immune diseases. Yes, and Malaria. If one is very ill from COVID, then one should take this, with anti-biotic and Zinc. A doctor needs to prescribe this. No, I am not a doctor, but this is the protocol. I just still, have a good memory.