Vitamin D
Vitamin D acts as a hormone, that may be synthesized by the sunlight
through the body to enhance immune cells and maintain bone
integrity[23]. Vitamin D is considered as a safe strategy to protect
from respiratory viruses and increase the antiviral defenses. vitamin D
low levels may modulate the expression as (chemokines, interferon, tumor
necrosis and proinflammatory cytokines). COVID-19 infected patients
almost might have an unsatisfactory vitamin D level. As a result,
vitamin D might act as an additional beneficial choice for coronavirus
treatment by getting (10 μg) as a supplement daily[24].