evidence: Randomized controlled trials — the highest standard of evidence — have found that hydroxychloroquine isn’t beneficial in treating hospitalized COVID-19 patients. Yet social media posts are claiming the drug works, and conservative outlets have touted an unpublished, and much-criticized, observational study as evidence of the drug’s effectiveness. [...] Boulware, David R. et. al. "A Randomized Trial of Hydroxychloroquine as Postexposure Prophylaxis for Covid-19." New England Journal of Medicine. 383.6 (2020). [...] Cavalcanti, Alexandre B. et. al. "Hydroxychloroquine with or without Azithromycin in Mild-to-Moderate Covid-19." New England Journal of Medicine. 383.21 (2020).