As stated on CNN, "I'm not going to recommend it. I'm not going to not recommend it." - CDC Director Robert Redfield on the drug hydroxychloroquine to treat Covid-19. Trump has suggested it has protective effects against Covid-19, although researchers say there's no evidence of that."
However, there are doctors reporting that this treatment has worked.
Trump recently said in a briefing that he's not sure if it will work, but if it does - great. If not, then at least they tried. However, it would be wise for anyone reading this to only do what their doctors say.