Co-enzyme Q10, sometimes called vitamin Q10, has a special role in maintaining healthy mitochondria, the small packets of enzymes that produce energy in all cells. Many physicians prescribe co-enzyme Q10 for prevention of heart disease.

Its beneficial role is believed to extend to the brain: One of the conditions suspected as a cause of Parkinson’s disease is a deficiency in how mitochondria function. That suspicion is strong enough that studies are in progress to determine if co-enzyme Q10 can either prevent or slow the progression of Parkinson’s disease. It is included in multi-vitamins, and can also be bought as a stand-alone supplement.