Coenzyme q10 is a necessary substance for normal heart function co q10 is vital for cellular energy production and is a powerful antioxidant and free radical scavenger coenzyme q10 appears throughout the human body it aids metabolic reactions such as the transformation of food into atp the energy used by the body coenzyme q10 deficiency appears to be caused more by the bodys inability to synthesize the nutrient than by a lack of the enzyme in the diet low blood levels are often associated