Quest Coenzyme Q10 contains a powerful fat soluble antioxidant that is required during the final stages of energy generation. May help to maintain energy and support cardiovascular health. Recommended for those taking statins and vitamin E supplements. Quest Coenzyme Q10 contains a powerful fat soluble antioxidant that is required during the final stages of energy generation. May help to maintain energy and support cardiovascular health. Recommended for those taking statins and vitamin E supplements.