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c19early.org COVID-19 treatment researchVitamin CVitamin C (more..)
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All Studies   Meta Analysis   Recent:  
0 0.5 1 1.5 2+ Progression 66% Improvement Relative Risk Vitamin C for COVID-19  Sun et al.  META ANALYSIS c19early.org Favors vitamin C Favors control

Therapeutic effects of high-dose vitamin C supplementation in patients with COVID-19: a meta-analysis

Sun et al., Nutrition Reviews, doi:10.1093/nutrit/nuad105
Sep 2023  
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Meta analysis of 14 studies showing lower COVID-19 progression with high-dose vitamin C treatment.
5 meta analyses show significant improvements with vitamin C for mortality Bhowmik, Kow, Olczak-Pruc, progression Sun, severity Bhowmik, and cases Xu.
Currently there are 64 vitamin C for COVID-19 studies, showing 20% lower mortality [10‑29%], 16% lower ventilation [-1‑31%], 15% lower ICU admission [2‑26%], 16% lower hospitalization [4‑27%], and 6% more cases [-13‑30%].
risk of progression, 65.6% lower, OR 0.34, p = 0.03, RR approximated with OR.
Effect extraction follows pre-specified rules prioritizing more serious outcomes. Submit updates
Sun et al., 8 Sep 2023, peer-reviewed, 13 authors.
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