https://www.selleckchem.com/pr....oducts/alizarin-red-
oncerns, and thus promote ethical research. To evaluate whether IL-6 inhibitor tocilizumab (TCZ) reduces mortality among hospitalized COVID-19 patients. Systematic review and meta-analysis of randomized controlled trials (RCTs) comparing TCZ versus placebo/control, for treatment of adults with COVID-19. Primary outcome was 28-30 days all-cause mortality. Search was conducted up to April 1st 2021. Two independent reviewers screened citations, extracted data, and assessed risk of bias. Relative risk (RR) with 95% confidence interva