Coenzyme Q10 (or ubiquinone) is an important cofactor in the mitochondrial electron transport chain, the biochemical pathway that generates energy in the form of adenosine triphosphate (ATP). Since nearly all cellular activities depend on energy to function, coenzyme Q10 is essential for the health of all human tissues and organs. Coenzyme Q10 is also a naturally-occurring antioxidant nutrient which decreases free radical formation in biological systems.
According to some experts, coenzyme Q10 should be considered an essential nutrient. Numerous studies indicate coenzyme Q10 also plays an important role in the maintenance of the entire cardiovascular system. Supplementation with coenzyme Q10 has shown to be useful for the maintenance of blood vessels and heart muscle function.