Hydroxychloroquine Is Effective and Safe for the Treatment of COVID-19, and May be Universally Effective When Used Early Before Hospitalization: A Systematic Review


Hydroxychloroquine (HCQ) has shown efficacy against COVID-19 in some but not all studies. We hypothesized that systematic review would show HCQ to be: effective against COVID-19, more effective when used earlier, not associated with worsening, and safe.


We searched PubMed, Cochrane, EmBase, Google Scholar, and Google for all reports on hydroxychloroquine as a treatment for COVID-19 patients. This included pre-prints and preliminary reports on larger COVID-19 studies. We examined the studies for efficacy, time of administration and safety.


HCQ was found consistently effective against COVID-19 when used early, in the outpatient setting. It was found overall effective also including inpatient studies. No unbiased study found worse outcomes with HCQ use. No mortality or serious safety adverse event was found.


HCQ is consistently effective against COVID-19 when used early in the outpatient setting, it is overall effective against COVID-19, it has not produced worsening, it is safe.

PdfClick here for more info.


You will need the Adobe Reader to view and print these documents.Get Adobe Reader

  • The American Orthopaedic Society for Sports Medicine logo
  • International Cartilage Repair Society logo
  • Arthroscopy Association of North America logo
  • International Society of Arthroscopy, Knee Surgery and Orthopaedic Sports Medicine logo
  • ESSKA logo