Vaccines are at least a year away. In order of most to least likely to work:
1. Chloroquine is hepotoxic and since cytokine storms is already one of the way covid19 leads to death there is a lot of question whether chloroquine can actually help (in terms of aggregate effect on CFR).
2. Remdesivir didn't work for ebola (original target) and there is no reason to think it would work for covid19.
3. Favipiravir shows activity against many viruses (SARS-CoV-2 included), but doesn't actually reduce mortality for other viral illnesses (unknown for convid19).
Key to understand, many things show activity with the virus but don't actually improve the disease progression.
1. Chloroquine is hepotoxic and since cytokine storms is already one of the way covid19 leads to death there is a lot of question whether chloroquine can actually help (in terms of aggregate effect on CFR).
2. Remdesivir didn't work for ebola (original target) and there is no reason to think it would work for covid19.
3. Favipiravir shows activity against many viruses (SARS-CoV-2 included), but doesn't actually reduce mortality for other viral illnesses (unknown for convid19).
Key to understand, many things show activity with the virus but don't actually improve the disease progression.