Hydroxychloroquine rated 'most effective therapy' by doctors for coronavirus: Global survey
An international poll of more than 6,000 doctors released Thursday found that the antimalarial drug hydroxychloroquine was the most highly rated treatment for the novel coronavirus.
The survey conducted by Sermo, a global health care polling company, of 6,227 physicians in 30 countries found that 37% of those treating COVID-19 patients rated hydroxychloroquine as the “most effective therapy” from a list of 15 options.
Hydroxychloroquine rated 'most effective therapy' by doctors for coronavirus: Global survey - Washington Times
This is not a clinical trial, just a poll of real world Doctors who are treating coronavirus patients.
Based on what I'm reading, these drugs work best when used early.