If you have heart disease or high cholesterol, respiratory problems, a history of cancer or even gum disease, they usually recommend a dose of 200-300mg of CoQ10 per day. Divided into 2 or 3 doses. Don’t take it in the evening, because it might keep you awake. CoQ10 works to help your mitochondria carry oxygen better to the cells. It is something your body naturally produces, but gets depleted as we age. It is fat soluble, so take it with food that contains some oil or fat. Some of the formulas have it combined with Vitamin E oil for better absorption. If you don’t have any of these health issues, you can take between 50-100 mg. per day. It can get expensive, so watch for sales and only buy from reputable companies.
As with any nutritional supplement, keep your physician informed as to the supplements you are taking. Even though many of them don’t know much about these things. You’re almost better off discussion these things with your pharmacist first.