The production of energy from food and oxygen requires many different enzymes and coenzymes. CoQ10 is found within the mitochondria in electron transport chains. It has several functions, including acting as a cofactor for NADH-Q reductase. An antioxidant is a substance which can combine with or neutralize free radicals. Free radicals are produced in the body during cellular metabolism and also under various stress and disease conditions.
Free radicals can damage cell membranes and lead to significant pathology.