evidence: The Efficacy of Multivitamin, Vitamin A, Vitamin B, Vitamin C, and Vitamin D Supplements in the Prevention and Management of COVID-19 and Long-COVID: An Updated Systematic Review and Meta-Analysis of Randomized Clinical Trials - PMID: 38732592 - PMCID: PMC11085542 - DOI: 10.3390/nu16091345 [...] Better-designed studies are needed to clarify these vitamins' potential effects against SARS-CoV-2. [...] Vitamin D supplementation for the treatment of COVID-19: A systematic review and meta-analysis of randomized controlled trials.Front Immunol. 2022 Oct 31;13:1023903. doi: 10.3389/fimmu.2022.1023903. eCollection 2022. Front Immunol. 2022. PMID: 36389703 Free PMC article.