CoQ10, or CoenzymeQ10, already exists within your body. It is found in the mitochondria of your cells, and assists in producing adenosine triphosphate, or ATP [source: University of Maryland Medical Center]. Because it is part of the energy-making cells in your body, it exists in its most concentrated forms in tissues of the body that require the most energy, like your heart, liver and kidneys.
CoQ10 also resides in other tissues of your body as well, but don't feel like you're swimming in CoQ10. The average adult's body only houses between a half gram to one and a half grams of CoQ10 total [source: Connolly].
This small amount of CoQ10 is necessary for your body to function. Though CoQ10 has been used with the pretense of treating many ailments, many of these applications remain controversial. Supplements can simply be taken for a CoenzymeQ10 deficiency -- although even that treatment is debatable. Currently, the Mayo Clinic is undecided if it is truly helpful to take supplements for "low CoQ10" [source: Mayo Clinic].
To learn about the benefits of CoQ10, read on.