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All Studies   Meta Analysis    Recent:   
0 0.5 1 1.5 2+ Severe case, C 46% Improvement Relative Risk Severe case, C+D+zinc 97% Vitamin C for COVID-19  Sharif et al.  Prophylaxis Is prophylaxis with vitamin C beneficial for COVID-19? Retrospective study in Bangladesh (December 2020 - February 2021) Lower severe cases with vitamin C (p=0.001) c19early.org Sharif et al., Nutrients, November 2022 Favors vitamin C Favors control

Impact of Zinc, Vitamins C and D on Disease Prognosis among Patients with COVID-19 in Bangladesh: A Cross-Sectional Study

Sharif et al., Nutrients, doi:10.3390/nu14235029
Nov 2022  
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Vitamin C for COVID-19
7th treatment shown to reduce risk in September 2020
 
*, now known with p = 0.000000098 from 67 studies, recognized in 10 countries.
No treatment is 100% effective. Protocols combine complementary and synergistic treatments. * >10% efficacy in meta analysis with ≥3 clinical studies.
3,800+ studies for 60+ treatments. c19early.org
Retrospective 962 COVID-19 patients in Bangladesh, showing significantly lower severity with vitamin C, vitamin D, and zinc supplementation, and improved results from the combination of all three.
This is the 56th of 67 COVID-19 controlled studies for vitamin C, which collectively show efficacy with p=0.000000098 (1 in 10 million). 18 studies are RCTs, which show efficacy with p=0.00088.
Study covers acetaminophen, vitamin C, zinc, and vitamin D.
risk of severe case, 46.0% lower, OR 0.54, p = 0.001, adjusted per study, multivariable, RR approximated with OR.
risk of severe case, 97.0% lower, OR 0.03, p = 0.005, adjusted per study, combined use of vitamin C, vitamin D, and zinc, multivariable, RR approximated with OR.
Effect extraction follows pre-specified rules prioritizing more serious outcomes. Submit updates
Sharif et al., 26 Nov 2022, retrospective, Bangladesh, peer-reviewed, 14 authors, study period 13 December, 2020 - 4 February, 2021.
This PaperVitamin CAll
Impact of Zinc, Vitamins C and D on Disease Prognosis among Patients with COVID-19 in Bangladesh: A Cross-Sectional Study
Nadim Sharif, Rubayet Rayhan Opu, Afsana Khan, Khalid J Alzahrani, Hamsa Jameel Banjer, Fuad M Alzahrani, Nusaira Haque, Shahriar Khan, Saimum Tahreef Soumik, Ming Zhang, Hanwen Huang, Xiao Song, Anowar Khasru Parvez, Shuvra Kanti Dey
Nutrients, doi:10.3390/nu14235029
Vitamin C, (ascorbic acid), vitamin D (cholecalciferol) and zinc (zinc sulfate monohydrate) supplements are important in immunity against coronavirus disease-2019 (COVID-19). However, a limited number of studies have been conducted on the association of vitamins and supplements with the reduced risks of COVID-19 infection. This study aims to evaluate the association of vitamins and supplements as treatment options to reduce the severity of COVID-19. Data were collected from 962 participants from 13 December 2020 to 4 February 2021. The presence of COVID-19 was confirmed by qRT-PCR. The Chi-square test and multivariate regression analyses were conducted. The ratio of uptake of vitamin C:vitamin D:zinc was 1:1:0.95. Uptake of vitamin C, vitamin D and zinc were significantly associated with the reduced risk of infection and severity of COVID-19 (OR: 0.006 (95% CI: 0.03-0.11) (p = 0.004)) and (OR: 0.03 (95% CI: 0.01-0.22) (p = 0.005)). The tendency of taking supplements was associated with the presence of infection of COVID-19 (p = 0.001), age (p = 0.02), sex (p = 0.05) and residence (p = 0.04). The duration of supplementation and medication was significantly associated with reduced hospitalization (p = 0.0001). Vitamins C, D and zinc were not significantly (p = 0.9) associated with a reduced risk of severity when taken through the diet. Hospitalization (p = 0.000001) and access to health facilities (p = 0.0097) were significantly associated with the survival period of the participants. Participants with better access to health facilities recovered early (OR: 6.21, 95% CI 1.56-24.7). This study will add knowledge in the field of treatment of COVID-19 by using vitamins and zinc supplements.
Author Contributions: Conceptualization, N.S. and S.K.D.; methodology, N.S. and M.Z.; software, N.S. and M.Z.; validation, N.S., M.Z and S.K.D.; formal analysis, N.S., R.R.O., A.K., H.J.B., F.M.A., N.H., S.K., S.T.S., M.Z., H.H., X.S. and A.K.P.; investigation, N.S.; resources, A.K.P. and S.K.D.; data curation, R.R.O., N.H., S.K. and S.T.S.; writing-original draft preparation, N.S.; writing-review and editing, N.S., A.K., K.J.A., H.J.B., F.M.A., M.Z. and H.H.; visualization, N.S. and S.K.D; supervision,
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