CoQ10 is an essential compound vital to a number of activities related to energy metabolism. CoQ10 is used by cells to produce energy needed for cell growth and maintenance, and functions as antioxidant. CoQ10 appears to also provide cardioprotective and neuroprotective actions in the body.
Cardiovascular Indications
Much of the basic research in support of CoQ10 supplementation has focused on the Congestive Heart Failure (CHF) model. The myocardium of patients with CHF demonstrates increased oxidative stress as well as decreased concentrations of CoQ10.
The evidence for CoQ10 used in the cardiovascular settings is promising. Improvement was found in several parameters related to CHF among the more recent randomized controlled trials (2-4) including frequency of hospitalization, dyspnea and edema.
Diabetes Indications
CoQ10 has been considered to improve glycemic control through various mechanisms, including decrease in oxidative stress. A more recent randomized controlled trial (n-74) using 200mg CoQ10 per day for 12 weeks displayed modest improvement in A1C levels.
Parkinson Indications
A randomized, double blind, placebo-controlled, multicenter study of 80 patients found that CoQ10 was associated with up to 44 percent less functional decline, including activities of daily living. A study (8) of 28 patients with Parkinson’s disease also demonstrated mild symptom improvement with daily oral dosing of 360mg of CoQ10.
Migraine
A preliminary open label trial (9) of 32 patients taking 150mg of Coenzyme Q10 daily demonstrated efficacy in reducing the frequency of migraine attacks. A recent randomized double blind, placebo controlled trial (10) of 42 patients taking CoenzymeQ10 at 300mg a day found similar benefits.
Exercise and work out
CoQ10 is sometimes promoted for improving physical ability or sports performance by enhancing the physical strength and stamina. The supplement may also help reduce fatigue after physical activities.