There’s no treatment unfortunately for COVID-19. They are testing various treatments. There is no evidence that the anti-flu treatments make any difference at all, although they’ve been trying them. There are some new anti-retrovirals that are being developed for problems like Ebola and others that may have an influence here and they are testing those.
So I suspect they will come out with a drug that makes some kind of difference but it will be horribly expensive and it will only be for people who are severely ill, so there is nothing you can take, there is no vitamin you can take to protect yourself. Soap is what protects you.