The most common uses for coenzyme Q10, or CoQ10, include treating heart failure, muscular dystrophy, cancer and periodontal disease, according to WebMD. Other uses for CoQ10 include boosting energy and speeding up the recovery following exercise.
Some patients use CoQ10 for heart failure, but there are only a few studies that support this type of use, explains WebMD. Many doctors recommend patients use CoQ10 in addition to medications for heart failure. As of 2105, there is no research that shows CoQ10 is effective at treating periodontal disease or speeding recovery following exercise.
When looking at CoQ10 and cancer, a study from the 1960s indicated people with cancer had low levels of CoQ10, states WebMD. Other studies showed that CoQ10 boosts the immune system, which is helpful for those fighting cancer. Modern studies, however, show that CoQ10 works best when taken along with traditional cancer drugs, not when taken alone.
Since CoQ10 is a dietary supplement, it is not regulated by the U.S. Food and Drug Administration, notes WebMD. Though it is relatively safe, there are side effects that affect some people including insomnia, nausea, rashes and abdominal pain. Other side effects include dizziness, headache, heartburn, sensitivity to light and fatigue.