Synergistic Effect of Quercetin and Vitamin C Against COVID-19: Is a Possible Guard for Front Liners

11/16 Pre-Exposure Prophylaxis study (treated before exposed to the virus)

Arslan et al., SSRN, doi:10.2139/ssrn.3682517 (Preprint)
Synergistic Effect of Quercetin and Vitamin C Against COVID-19: Is a Possible Guard for Front Liners

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Small prophylaxis RCT with 113 patients showing fewer cases with quercetin+vitamin C prophylaxis. NCT04377789.

Arslan et al., 11/16/2020, Randomized Controlled Trial, Turkey, Europe, preprint, 7 authors, this trial uses multiple treatments in the treatment arm (combined with vitamin C) - results of individual treatments may vary.

risk of COVID-19 case, 91.7% lower, RR 0.08, p = 0.03, treatment 1 of 71 (1.4%), control 9 of 42 (21.4%), adjusted per study.

Effect extraction follows pre-specified rules prioritizing more serious outcomes. For an individual study the most serious outcome may have a smaller number of events and lower statistical signficance, however this provides the strongest evidence for the most serious outcomes when combining the results of many trials.

All 6 studies All Outcomes

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