Conv. Plasma
Nigella Sativa
Peg.. Lambda

All vitamin D studies
Meta analysis
Home COVID-19 treatment researchVitamin DVitamin D (more..)
Melatonin Meta
Bromhexine Meta Metformin Meta
Budesonide Meta
Cannabidiol Meta Molnupiravir Meta
Colchicine Meta
Conv. Plasma Meta
Curcumin Meta Nigella Sativa Meta
Ensovibep Meta Nitazoxanide Meta
Famotidine Meta Paxlovid Meta
Favipiravir Meta Peg.. Lambda Meta
Fluvoxamine Meta Quercetin Meta
Hydroxychlor.. Meta Remdesivir Meta
Ivermectin Meta
Lactoferrin Meta

All Studies   Meta Analysis   Recent:  
0 0.5 1 1.5 2+ Mortality 63% Improvement Relative Risk Ventilation 20% Recovery 20% Vitamin D  Soliman et al.  LATE TREATMENT  RCT Is late treatment with vitamin D beneficial for COVID-19? RCT 56 patients in Egypt Lower mortality (p=0.21) and ventilation (p=0.56), not sig. Soliman et al., Proceedings of Singapo.., Sep 2021 Favors vitamin D Favors control

Impact of Vitamin D Therapy on the Progress COVID-19: Six Weeks Follow-Up Study of Vitamin D Deficient Elderly Diabetes Patients

Soliman et al., Proceedings of Singapore Healthcare, doi:10.1177/20101058211041405
Sep 2021  
  Source   PDF   All Studies   Meta AnalysisMeta
Small RCT with 56 eldery diabetes patients hospitalized in Egypt, 40 treated with cholecalciferol, not showing significant differences.
Cholecalciferol was used in this study. Meta analysis shows that late stage treatment with calcitriol / calcifediol (or paricalcitol, alfacalcidol, etc.) is more effective than cholecalciferol: 65% [41‑79%] lower risk vs. 38% [25‑49%] lower risk. Cholecalciferol requires two hydroxylation steps to become activated - first in the liver to calcifediol, then in the kidney to calcitriol. Calcitriol, paricalcitol, and alfacalcidol are active vitamin D analogs that do not require conversion. This allows them to have more rapid onset of action compared to cholecalciferol. The time delay for cholecalciferol to increase serum calcifediol levels can be 2-3 days, and the delay for converting calcifediol to active calcitriol can be up to 7 days.
This is the 5th of 28 COVID-19 RCTs for vitamin D, which collectively show efficacy with p=0.0000081.
This is the 50th of 116 COVID-19 controlled studies for vitamin D, which collectively show efficacy with p<0.0000000001 (1 in 38 sextillion).
risk of death, 63.4% lower, RR 0.37, p = 0.21, treatment 7 of 40 (17.5%), control 3 of 16 (18.8%), adjusted per study, odds ratio converted to relative risk, logistic regression.
risk of mechanical ventilation, 20.0% lower, RR 0.80, p = 0.56, treatment 14 of 40 (35.0%), control 7 of 16 (43.8%), NNT 11, unadjusted.
risk of no recovery, 20.0% lower, RR 0.80, p = 0.56, treatment 14 of 40 (35.0%), control 7 of 16 (43.8%), NNT 11, unadjusted.
Effect extraction follows pre-specified rules prioritizing more serious outcomes. Submit updates
Soliman et al., 1 Sep 2021, Randomized Controlled Trial, placebo-controlled, Egypt, peer-reviewed, 3 authors, dosage 200,000IU single dose.
All Studies   Meta Analysis   Submit Updates or Corrections
This PaperVitamin DAll
Impact of Vitamin D Therapy on the Progress COVID-19: Six Weeks Follow-Up Study of Vitamin D Deficient Elderly Diabetes Patients
Amin R Soliman, Tarek Samy Abdelaziz, Ahmed Fathy
Proceedings of Singapore Healthcare, doi:10.1177/20101058211041405
Background: Coronavirus disease-19 (COVID-19) is an ongoing pandemic causing considerable fatalities worldwide. Vitamin D modulates the immune response through effects on various cells, such as: macrophages, B and T lymphocytes, neutrophils, and dendritic cells. Aim: To explore whether supplementation of vitamin D, in the form of a single intramuscular cholecalciferol injection, to patients with diabetes, COVID-19, and low vitamin D levels could improve the prognosis of those patients. Methods: This was a placebo-controlled randomized prospective study. The study has two arms as follows: the intervention arm (40 vitamin D deficient diabetes elderly patients that acquired SARS-CoV-2), compared to the control arm (16 elderly diabetes patients, with deficient vitamin D with SARS-CoV-2). Patients in the intervention arm were given vitamin D as a single intramuscular injection (200,000 IU); patients in the control arm were given placebo. The primary outcome was mortality within 6 weeks of the diagnosis of COVID-19. Clinical, laboratory, treatment, and outcome data were recorded after 6 weeks of follow-up. Results: No significant difference in 6 weeks mortality was observed between patients who received vitamin D and patients who received placebo (17.5% vs 18.8%, p = 0.838). Age, presence of hypertension, and chronic obstructive pulmonary disease were independent predictors of mortality at 6 weeks. Conclusion: Vitamin D supplementation did not reduce the severity or mortality of COVID-19 at 6 weeks. Further large scale studies are required to explore the effect of vitamin D therapy on survival in patients with diabetes mellitus who acquire COVID-19.
Author Contributions ARS contributed to study design, data collection, and final revision of the manuscript Declaration of Conflicting Interests The authors declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article. Ethical Approval The study protocol was approved by the Kasr Alainy Research Ethics Committee (REC), number KA (KA-2020/151). The study is registered to (NCT04733625). Informed Consent Yes. According to Declaration of Helsink Trial Registration NCT04733625 ORCID iD Tarek Samy Abdelaziz 
Bleakley, Licciardi, Binks, Vitamin D modulation of the innate immune response to paediatric respiratory pathogens associated with acute lower respiratory infections, Nutrients
Bombardini, Picano, Angiotensin-converting enzyme 2 as the molecular bridge between epidemiologic and clinical features of COVID-19, Can J Cardiol
Cantorna, Vitamin D and its role in immunology: multiple sclerosis, and inflammatory bowel disease, Progress in Biophysics Mol Biol
D'avolio, Avataneo, Manca, 25-hydroxyvitamin d concentrations are lower in patients with positive PCR for SARS-CoV-2, Nutrients
Grant, Lahore, Mcdonnell, Evidence that vitamin D supplementation could reduce risk of influenza and COVID-19 infections and deaths, Nutrients
Han, Jones, Tangpricha, High dose vitamin D administration in ventilated intensive care unit patients: a pilot double blind randomized controlled trial, J Clin Translational Endocrinol
Hastie, Mackay, Ho, Vitamin D concentrations and COVID-19 infection in UK Biobank, Diabetes Metab Syndr Clin Res Rev
Jakovac, Covid-19 and vitamin D-is there a link and an opportunity for intervention?, Am J Physiology-Endocrinology Metab
Ketha, Thacher, Oberhelman, Comparison of the effect of daily versus bolus dose maternal vitamin D3 supplementation on the 24, 25-dihydroxyvitamin D3 to 25-hydroxyvitamin D3 ratio, Bone
Kralj, Jakovac, Vitamin D and COVID-19 in an immunocompromised patient with multiple comorbidities-a case report, Clin Case Rep
Laird, Rhodes, Kenny, Vitamin D and inflammation: potential implications for severity of COVID-19, Irish Med J
Liu, Stenger, Li, Toll-like receptor triggering of a vitamin D-mediated human antimicrobial response, Science
Martineau, Jolliffe, Hooper, Vitamin D supplementation to prevent acute respiratory tract infections: systematic review and meta-analysis of individual participant data, BMJ
Mishra, Singh, Singh, Hyperinflammation and Immune Response Generation in COVID-19, Neuroimmunomodulation
Murai, Fernandes, Sales, Effect of a single high dose of Vitamin D3 on hospital length of stay in patients with moderate to severe COVID-19, JAMA
Pham, Rahman, Majidi, Acute respiratory tract infection and 25-hydroxyvitamin D concentration: a systematic review and meta-analysis, Int J Environ Res Public Health
Phokela, Peleg, Moya, Regulation of human pulmonary surfactant protein gene expression by 1α,25-dihydroxyvitamin D3, Am J Physiology-Lung Cell Mol Physiol
Late treatment
is less effective
Please send us corrections, updates, or comments. Vaccines and treatments are complementary. All practical, effective, and safe means should be used based on risk/benefit analysis. No treatment, vaccine, or intervention is 100% available and effective for all current and future variants. We do not provide medical advice. Before taking any medication, consult a qualified physician who can provide personalized advice and details of risks and benefits based on your medical history and situation. FLCCC and WCH provide treatment protocols.
  or use drag and drop