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. 2022 Apr 13;14(8):1625. doi: 10.3390/nu14081625

Table 2.

Evidence that vitamin D reduces concentrations of biomarkers associated with long COVID.

Biomarker Approach Finding Reference
D-dimer, a coagulation biomarker High-dose vitamin D supplementation on COVID-19 patients No effect [78]
Procalcitonin Supplementation with 5000 IU/d vs. 1000 IU/d for 36 and 33 COVID-19 patients No effect [77]
Neutrophils count Supplementation with 5000 IU/d vs. 1000 IU/d for 36 and 33 COVID-19 patients Significant increase [77]

Abbreviations: COVID-19 = coronavirus disease 2019; IU = international unit.