COVID-19 studies:  C19 studies: C19:  IvermectinIVM Vitamin DV.D PXPX FLVFLV PVP-IPI BUBU BHBH BLBL CICI HC QHC Q NZNZ COCO More..
Vitamin D meta
2017 N/A
Martineau et al., BMJ 2017, 356, doi:10.1136/bmj.i6583 (Peer Reviewed) (meta analysis)
Vitamin D supplementation to prevent acute respiratory tract infections: systematic review and meta-analysis of individual participant data
Source   PDF   Share   Tweet
Meta analysis of 25 RCTs showing vitamin D supplementation was safe and it protected against acute respiratory tract infection overall. Patients who were very vitamin D deficient and those not receiving bolus doses experienced the most benefit.
Vitamin D supplementation reduced the risk of acute respiratory tract infection among all participants (adjusted odds ratio aOR 0.88 [0.81-0.96], p=0.003.
In subgroup analysis, protective effects were seen in those receiving daily or weekly vitamin D without additional bolus doses (aOR 0.81 [0.72-0.91]) but not in those receiving one or more bolus doses (aOR 0.97 [0.86-1.10]). Among those receiving daily or weekly vitamin D, protective effects were stronger in those with baseline 25-hydroxyvitamin D levels <25 nmol/L (aOR 0.30 [0.17-0.53]) than in those with baseline 25-hydroxyvitamin D levels ≥25 nmol/L (aOR 0.75 [0.60-0.95]).

Martineau et al., 1/1/2017, peer-reviewed, 25 authors.
risk of COVID-19 case, 7.3% lower, RR 0.93, p = 0.003, odds ratio converted to relative risk.

Effect extraction follows pre-specified rules prioritizing more serious outcomes. For an individual study the most serious outcome may have a smaller number of events and lower statistical signficance, however this provides the strongest evidence for the most serious outcomes when combining the results of many trials.
All 109 studies
Please send us corrections, updates, or comments. Vaccines and treatments are both extremely valuable and complementary. All practical, effective, and safe means should be used. Elimination of COVID-19 is a race against viral evolution. No treatment, vaccine, or intervention is 100% available and effective for all current and future variants. Denying the efficacy of any method increases the risk of COVID-19 becoming endemic; and increases mortality, morbidity, and collateral damage. 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. Treatment protocols for physicians are available from the FLCCC.
  or use drag and drop to submit images   
Submit