https://www.upi.com/Top_News/World-News/2020/03/12/South-Korea-experts-recommend-anti-HIV-anti-malaria-drugs-for-COVID-19/6961584012321/
Already in use in Korea on the recommendation of their central health body, I believe from before trump mentioned it. He may have focused on a flawed trial because he is, to put it very mildly, a flawed man, but the mere fact that he is positive about the drug is not a reason to dismiss out of hand. It appears to work and is being used as a successful treatment by several nations.