0
0.5
1
1.5
2+
Case
94%
Improvement
Relative Risk
COVID-19 or flu-like illness
81%
Vitamin C for COVID-19 Margolin et al. Prophylaxis
Does vitamin C + combined treatments reduce COVID-19 infections?
Retrospective 113 patients in the USA
Fewer cases with vitamin C + combined treatments (p=0.0032)
c19early.org
Margolin et al., J. Evidence-Based Int.., Jul 2021
Favors vitamin C
Favors control