Coenzyme Q10 is an essential nutrient found in every cell of the body which is involved in cellular energy production. It confers a protective effect against damage from free radicals, thus also classifying it as an antioxidant. CoQ10 can be found in a multitude of foods, but is especially high in beef, peanuts, sardines, mackerel and organ meats.

CoQ10 has demonstrable effects against cardiovascular disease, cancer, and periodontal disease, and is also said to boost recovery from exercise. However, the most documented effect on health which CoQ10 has is its beneficial effect on treating hypertension. People with hypertension have CoQ10 levels which are below normal, and these same individuals have shown a reduction in blood pressure when supplemented with CoQ10.

Another strong benefit of CoQ10 supplementation is treatment of periodontal disease. CoQ10 can reduce the swelling, bleeding, pain and gum recession which characterize the disease. However, pairing this supplement with vitamin C would yield stronger benefits.

Some individuals take CoQ10 to reverse skin damage and preserve the collagen and elastin in skin. Levels of CoQ10 decrease with advancing age, resulting in decreased ability to produce collagen and elastin, so taking CoQ10 orally or applying it topically may boost skin repair.

Most individuals should supplement with 100 milligrams of CoQ10, but if insomnia occurs, take half the dose and only take it in the morning. Side effects at high doses (300 milligrams or more per day) include rashes, abdominal pain, nausea, dizziness, headache, fatigue and sensitivity to light. Individuals who are taking warfarin may experience a diminished response to the blood thinner when taking CoQ10. Diabetics will experience decreased insulin requirements when taking CoQ10.