This has become quite challenging. One wrong idea that gains traction because it is touted as truth by a celebrity or public figure can set back days of public health gains. The recent trial using azithromycin/hydroxychloroquine to treat covid-19 is a prime example of this. While the results deserve further investigation, the study itself is small and not designed in a way that should be changing clinical practice unless a doctor is completely out of safely tested options.
The missus has a stash of hydroxychloroquine (don't rob us, pls) for lupus. It's pretty rough with side effects and also pretty dangerous (possibly specifically to her because of her immune system). Not sure it's the type of thing you'd want people to self administer.
https://blogs.bmj.com/bmj/2020/03/26/abraar-karan-covid-19-trust-experts-brilliance-everyday-people/