Risk of COVID not reduced by 3,200 IU of vitamin D during 6 months (no surprise) – RCT March 2022

---

Vitamin D Supplements for Prevention of Covid-19 or other Acute Respiratory Infections: a Phase 3 Randomized Controlled Trial (CORONAVIT)

PrePrint March 2022, doi: https://doi.org/10.1101/2022.03.22.22271707
Jolliffe, Hayley Holt, Matthew Greenig, Mohammad Talaei, Natalia Perdek, Paul Pfeffer, Sheena Maltby, Jane Symons, Nicola Barlow, Alexa Normandale, Rajvinder Garcha, Alex Richter, Sian Faustini, Christopher Orton, David Ford, Ronan Lyons, Gwyneth Davies, Frank Kee, Christopher Griffiths, John Norrie, Aziz Sheikh, Seif Shaheen, Clare Relton, Adrian Martineau

BACKGROUND: Vitamin D metabolites support innate immune responses to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and other respiratory pathogens. Randomized controlled trials of vitamin D to prevent coronavirus disease 2019 (Covid-19) have not yet reported.

METHODS: We randomly assigned 6200 U.K. adults to receive an offer of a postal finger-prick 25-hydroxyvitamin D (25[OH]D) test with provision of a 6-month supply of higher-dose vitamin D (3200 IU/d, n=1550) or lower-dose vitamin D (800 IU/d, n=1550) to those with blood 25(OH)D concentration <75 nmol/L, vs. no offer of testing or supplementation (n=3100). The primary outcome was the proportion of participants experiencing at least one swab test- or doctor-confirmed acute respiratory infection (ARI) of any cause at six months. Secondary outcomes included incidence of swab test-confirmed Covid-19.

RESULTS: Of 3100 participants offered testing, 2958 (95.4%) accepted, and 2690 (86.8%) had 25(OH)D <75 nmol/L and were sent vitamin D supplements (1356 higher-dose, 1334 lower-dose). 76 (5.0%) vs. 87 (5.7%) vs. 136 (4.6%) participants in higher-dose vs. lower-dose vs. no-offer groups experienced at least one ARI of any cause (odds ratio [OR] for higher-dose vs. no-offer 1.09, 95% CI 0.82-1.46; lower-dose vs. no-offer 1.26, 0.96-1.66). 45 (3.0%) vs. 55 (3.6%) vs. 78 (2.6%) participants in higher-dose vs. lower-dose vs. no-offer groups developed Covid-19 (OR for higher-dose vs. no-offer 1.13, 0.78-1.63; lower-dose vs. no-offer 1.39, 0.98-1.97).

CONCLUSIONS: Among adults with a high baseline prevalence of vitamin D insufficiency, implementation of a test-and-treat approach to vitamin D replacement did not reduce risk of all-cause ARI or Covid-19.

Clinical Trial NCT04579640

 Download preprint PDF from VitaminDWiki

 Download final PDF from VitaminDWiki

---

Major problem - did not wait for Vitamin D levels to plateau before gettng infection data

The trial appears to have started collecting data just 1 month after starting Vitamin D dosing
At that point, probably <10% had levels >40 ng. (thus very unlikely to have any benefit)

Also, even at the end of the 6 months about half of the participants still had levels <40 ng

---

VitaminDWiki - 36 studies have found that 5,000 IU gets only about half to >40 ng

Appears that would need >12,000 IU to get most >50 ng

---

Many studies are finding at >50 ng level of vitamin D is needed to fight COVID

COVID fought by 50 ng of Vitamin D

• Is 50 ng of Vitamin D enough to fight COVID - TrialSiteNews - Jan 2024
• COVID etc. prevented and treated with 50,000 IU Vitamin D capsules - July 2022
• Discussion of COVID and 50 ng of Vitamin D (video and transcript)– Dr. Campbell Nov 17, 2021
• COVID probably fought by Vitamin D, might need 50 ng - Dr. Patrick Nov 8, 2021
• COVID-19 mortality extrapolates to zero at 50 ng of vitamin D – 18th Meta-analysis Sept 2021
• Vitamin D and COVID, review of evidence, loading dose if less than 50 ng - Masterjohn Sept 2021
• T-cells need at least 40-50 ng of Vitamin D to fight COVID-19 - June 2021
• COVID-19 prognostic indicators in plasma extrapolate to zero if Vitamin D is 40 to 80 ng – March 2021
• To protect against COVID-19, how much vitamin D – 20 to 50 ng – March 19, 2021

---

VitaminDWiki – Is 50 ng the level needed?

Is 50 ng of vitamin D too high, just right, or not enough contains the following

Vitamin D	Treats
150 ng	Multiple Sclerosis *
80 ng	Cluster Headache * Reduced office visits by 4X *
70 ng	Sleep *
60 ng	Breast Cancer death reduced 60% Preeclampsia RCT
50 ng	COVID-19 T1 Diabetes Fertility Psoriasis Infections Review Infection after surgery
40 ng	Breast Cancer 65% lower risk Depression ACL recovery Hypertension Asthma?
30 ng	Rickets

* Evolution of experiments with patients, often also need co-factors

---

VitaminDWiki – COVID-19 treated by Vitamin D - studies, reports, videos

As of March 31, 2024, the VitaminDWiki COVID page had:  trial results,   meta-analyses and reviews,   Mortality studies   see related:   Governments,   HealthProblems,   Hospitals,  Dark Skins,   All 26 COVID risk factors are associated with low Vit D,   Fight COVID-19 with 50K Vit D weekly   Vaccines   Take lots of Vitamin D at first signs of COVID   166 COVID Clinical Trials using Vitamin D (Aug 2023)   Prevent a COVID death: 9 dollars of Vitamin D or 900,000 dollars of vaccine - Aug 2023
5 most-recently changed Virus entries

---

VitaminDWiki – Loading (not daily) doses quickly raise Vitamin D levels and fight Viruses

This list is automatically updated