[GulfMan]

Nope, the study is already well underway. Trump said so during the press conference. He specifically said they started administering two days ago.

[Yardstick]

Okay, I wasn’t aware of that but you’re right. He said they should start seeing meaningful results in three days:

https://www.cnbc.com/2020/03/30/trump-says-us-officials-should-have-good-idea-if-malaria-drug-works-on-coronavirus-in-three-days.html