Hydroxychloroquine has no benefit on symptoms at 14 days

Simon Collins, HIV i-Base

Although hydroxychloroquine is no longer being studied as either treatment or prophylaxis for COVID-19 there will continue to be studies that add to this negative data set that are worth briefly reporting.

In this case, a randomised, blinded, placebo-controlled study that planned to enrol ~ 500 adults hospitalised with COVID-19 and respiratory symptoms was stopped early (after 479 participants had been enrolled) due to no evidence of effect. The primary endpoint was change in symptoms at day 14 based on a 7-category ordinal scale.

The study concluded “these findings do not support the use of hydroxychloroquine for treatment of COVID-19 among hospitalised adults”.


Self WH et al. Effect of hydroxychloroquine on clinical status at 14 days in hospitalized patients with COVID-19: A randomized clinical trial. JAMA2020;324(21):2165-2176. doi:10.1001/jama.2020.2224. (9 November 2020).

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