Evidence

Research on CoQ10 use for specific conditions and activities shows:

• Heart conditions. CoQ10 has been shown to improve symptoms of congestive heart failure. Although findings are mixed, CoQ10 might help reduce blood pressure. Some research also suggests that when combined with other nutrients, CoQ10 might aid recovery in people who've had bypass and heart valve surgeries.
• Diabetes. Although more studies are needed, some research suggests that CoQ10 may help reduce low-density lipoprotein (LDL) cholesterol and total cholesterol levels in people with diabetes, lowering their risk of heart disease.
• Parkinson's disease. Recent research suggests that even high doses of CoQ10 don't seem to improve symptoms in people with Parkinson's disease.
• Statin-induced myopathy. Some research suggests that CoQ10 might help ease the muscle weakness and pain sometimes associated with taking statins.
• Migraines. Some research suggests that CoQ10 might decrease the frequency of these headaches.
• Physical performance. Because CoQ10 is involved in energy production, it's believed that this supplement might improve your physical performance. However, research in this area has produced mixed results.