No Evidence of Benefit for Chloroquine and Hydroxychloroquine in COVID-19 Patients, Study Finds

A large observational study, published in The Lancet, suggests that treatment with the antimalarial drug chloroquine or its analogue hydroxychloroquine (taken with or without the antibiotics azithromycin or clarithromycin) offers no benefit for patients with COVID-19. The study analyzed data from nearly 15,000 patients with COVID-19 receiving a combination of any of the four drug regimens and 81,000 controls.

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