Purpose To provide a precise summary and collate the hitherto available clinical evidence
on the effect of vitamin D supplementation on clinical outcomes in COVID-19 patients …

Background The role of oral vitamin D3 supplementation for hospitalized patients with
COVID-19 remains to be determined. The study was aimed to evaluate whether vitamin D3 …

Exaggerated oxidative stress and hyper-inflammation are essential features of
oxidative/inflammatory diseases. Simultaneously, both processes may be the cause or …

A recent retrospective study has provided evidence that COVID-19 infection may be notably
less common in those using supplemental melatonin. It is suggested that this phenomenon …

The ongoing “pandemic” involving the severe acute respiratory syndrome coronavirus 2
virus (SARS-CoV-2) has several characteristics that make it unique in the history of …

Vitamin D and zinc are important components of nutritional immunity. This study compared
the serum concentrations of 25-hydroxyvitamin D (25 (OH) D) and zinc in COVID-19 …

Introduction: Low serum vitamin D has been shown to be a risk factor for Coronavirus 2019
(COVID-19). The aim of this study was to assess the effects of high dose vitamin D …

Abstract The coronavirus disease 2019 (COVID-19) produces severe respiratory symptoms
such as bilateral pneumonia associated to a high morbidity and mortality, especially in …

This data-based cohort consisted of 26,508 (7%) United States veterans out of the 399,290
who tested positive for SARS-CoV-2 from 1 March to 10 September 2020. We aimed to …

OBJECTIVE: Post-COVID-19 syndrome appears to be a multi-organ illness with a broad
spectrum of manifestations, occurring after even mild acute illness. Limited data currently …