Selenium
Selenium is well known due to the functions of selenoproteins as an
antioxidant defense for cell signaling as (CAT, SOD, GSH, ROS) and redox
homeostasis[29]. Glutathione peroxidase is famous for reducing lipid
peroxides and hydrogen, thioredoxin reductase for the thiol systems
homeostasis. ROS are generated against (HIV) for the immunity system,
(RSV) for the respiratory system and flu viruses 30]. Selenium low
intake level can weaken the immune system, on the other hand rapid RNA
mutations from benign variants to virulence. Ginseng bioactive component
extract had used successfully for bronchitis coronavirus. As a result
selenium supplementation can be used for COVID‐19 treatment[31].