Chloroquine, or hydroxychloroquine, has been used to treat malaria since 1944. It can be given before exposure to malaria to prevent infection, and it can also be given as treatment afterward.

Could a decades-old malaria drug work to treat COVID-19? Elon Musk seems to think so, recently tweeting that it "might be worth considering chloroquine" for COVID-19

According to ABC News, given chloroquine’s effectiveness in treating Sars, scientists have investigated if it will be an effective treatment against the new coronavirus responsible for COVID-19. So far, the initial trials are encouraging.

Read the report here.