An antioxident close to Vitamin E in structure, CoQ10 is a fat-soluble vitamin-like substance present in every cell of the body. It also occurs naturally in a number of foods, including organ meats, soy oil, sardines, mackerel and peanuts. It is a powerful antioxidant and acts as a coenzyme for several of the key steps in the production of energy within every cell. Low levels of CoQ10 have been linked to several diseases. Low levels are attributed to an insufficient dietary intake combined with an inability of the body to manufacture its own. A number of commonly prescribed medications can also affect levels including statins (used to treat high cholesterol), beta-blockers and tricyclic antidepressants.

CoQ10 has been particularly successful in the area of cardiac health. It is found in fairly high concentrations in healthy hearts. Conversely, low levels are associated with congestive heart failure. It is also thought that low levels may also be the main cause in heart failure. It has also helpful in reducing blood pressure and heart rate and associated conditions, as well as peridontal disease. It has no known side-effects.