The effective role of CoQ10 against severe oxidative stress by improving the mitochondrial dysfunction: One of the most crucial elements of sepsis infections is severe oxidative stress which is caused by mitochondrial dysfunction leading to decreasing IL-10 and VCAM. During a septic shock, a condition in which the level of CoQ10 is decreased and it accompanies by increasing IL-6 and decreasing LDL (plasma carrier of CoQ10), optimal oxygenation and as a result making proper hemodynamic condition, are supposed to improving the mitochondrial dysfunction. Although CoQ10 has proven benefits in suppressing the production of ROS, raising the cellular metabolism, and sustaining the function of Na/K ATPas, the supplementation with CoQ10 could not solely benefit critically for the ill advanced patients. ROS: Reactive oxygen species