CoQ10 is found in all cells of the body. It's been found effective against heart disease, congestive heart failure, high blood pressure, insulin resistance, gum disease, cancer, neurological problems, including Parkinson's disease.
What CoQ10 does is help in mitochondria in your cells turn food into energy. While our bodies produce CoQ10, this production slows down as we age.
There have been several hundred studies on CoQ10. As an example, a study of 2,700 people with congestive heart failure who took 50 to 150 mgs of CoQ10 for only 90 days had an 80% reduction in fluid retention, 75% reduction in heart palpitations and 50% reductions in liver enlargement and shortness of breath. These are powerful changes that occurred in only 90 days.
Dr. Peter Langsjoen who has studied CoQ10 extensively recommends taking 200 to 300 mg per day with food.