demonstrated suggested inconclusive safety concern ongoing study display ongoing demontrated benefit only
COVID-19 severe or critically
COVID-19 severe or critically
Vitamins
vitamin C Zhang

3 studies excluded by filtering options 0

6119 COVID-VIT-D, 2022 113high risk of bias
6462 Jamali Moghadam Siahkali, 2021 113high risk of bias
6566 Kumari, 2020 100risk of bias not avaialble