What is it?
Coenzyme Q10 (CoQ10) is an antioxidant that is made in the human body.
What it does
CoQ10 is necessary for the basic functioning of cells, helping food to be converted into energy. It is also an antioxidant.
Some evidence suggests Alzheimer’s Disease may be helped by a synthetic product idebenone, which is similar to CoQ10. Some evidence supports the use of CoQ10 to treat high blood pressure and heart failure. Some potential has been shown in the treatment of a number of conditions, including eye disease, asthma, chronic fatigue, and high cholesterol, gum disease, and chemotherapy side effects in children. 
CoQ10 levels are reported to decrease with age and to be low in patients with some chronic diseases.
Meat, fish, nuts, and some oils are the richest nutritional sources of CoQ10, while much lower levels can be found in most dairy products, vegetables, fruits, and cereals. 
Recommended Dietary Allowance (RDA)
To date there is no RDA established for CoQ10.
Molecular Dosage Range
Orthomolecular practitioners may recommend dosages based on individual requirements.