In recent research published directly on the U.S. National Library website, significantly positive results have been demonstrated with intravenous vitamin C administration as a prevention against the coronavirus known as COVID 19.
In research, administration of high doses of vitamin C has been shown to reduce ICU length of stay in patients with severe disease and significantly reduce mortality in patients with COVID.19 Furthermore, vitamin C reduces the risk of coronavirus infection.
You can read more directly on the American National Library's portal: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7167497/
English 
Slovak 
German