Table 2.

Vitamins and their role.

Vitamins	Role
Vitamin-A	Deficiency of Vit-A leads to enhancement of Bronchitis virus in chicken [73]
Vitamin B2	Effectively reduced titer of MERS-CoV in human plasma products [75]
Vitamin B3	Strong anti-inflammatory response during the ventilator-associated lung injury [76]
Vitamin B-12	Improves sustained viral response in patients with hepatitis C [77] Inhibits RNA Dependent RNA polymerase activity of an nsp-12 protein in SARS-CoV-2 [78]
Vitamin C	Lowering of pneumonia in lower respiratory tract infection [79]. Increase the resistance of chicken embryo organ culture against avian coronavirus infection [80]
Vitamin D	Enhancement of cellular immunity through induction of antimicrobial peptides [81,82]. Lowering of SARS-CoV-2 infection by targeting unbalanced RAS [83].
Vitamin E	Deficiency of Vit-E along with Vit-D caused the bovine coronavirus in calves [88]