CoQ-10 Has Been Clinically Shown to Promote a Healthy Heart. Co-Q10 also known as CoEnzyme Q-10 is an essential component of our cells which promotes energy production. Numerous studies have shown CoEnzyme Q-10 plays a key role in promoting Cardiovascular health. . As we age our body's natural production of Co-Q10 slows down making it harder to convert fats and sugars into energy. Natrol CoQ-10 is a natural antioxidant that helps cells work more efficiently in the heart and throughout the body.