Coenzyme Q10, commonly known as CoQ10, is a natural antioxidant found in the body, particularly in the mitochondria of cells. It plays a crucial role in energy production, helping convert nutrients into energy that cells can use. CoQ10 levels can decrease with age or certain health conditions, which may impact overall energy levels and health. CoQ10 is also available as a dietary supplement and is often used to support heart health and improve energy levels. Some studies suggest it may help with conditions like heart disease and migraines, but more research is needed to confirm these benefits.