CoQ10: Food Sources, How to Take It and Choosing a Supplement

Coenzyme Q10 is made by the body and is also present in food. Its role in cellular energy production does not mean everyone needs a supplement. Before buying one, consider why you want to take it, your medicines and your usual diet. [1] [3]

What does CoQ10 do?

CoQ10 helps cells produce energy and acts as an antioxidant. Supplement studies ask a different question: whether a particular product and dose improve a particular outcome in a defined group. A role inside cells does not establish that a capsule will relieve fatigue, even when the packaging mentions energy. [1] [3]

Which foods contain CoQ10?

Meat, poultry and fish contain CoQ10, as do plant foods including peanuts, sesame seeds and some vegetable oils. Fruit, vegetables and eggs also provide it. Amounts vary with the food and its preparation, so naming one food as the best source for everyone is misleading. [2]

The figures below refer to the portions in the source, not daily targets or recommended cooking methods. Three ounces is about 85 grams; one ounce is about 28 grams. [2]

Think of eggs as a protein food in a meal rather than increasing their number to obtain more CoQ10. The guide to eggs in a balanced diet and meal ideas considers portions alongside the rest of the plate.

How can plant sources fit into everyday meals?

You do not need to start eating meat solely to obtain CoQ10: the body also makes its own. There is no established dietary CoQ10 intake target for adults. [2]

Here are some combinations to adapt to your meals:

• Pair fruit with unsalted peanuts for a snack. To judge a portion, check the calories and nutrients in roasted peanuts. The food page does not calculate a CoQ10 dose.
• Add sesame seeds to a vegetable dish or salad. Chickpeas or lentils alongside it are one way to add variety to the meal.
• If you eat fish, serve trout with vegetables and bulgur. If you eat eggs, try a vegetable omelet with whole-grain bread.

These are meal ideas, not a personalized diet plan. Adapt them to allergies, medical restrictions and any existing nutrition plan. Enlarging portions to match the milligrams in a capsule does not answer whether a supplement is appropriate.

How should you take CoQ10: with food or on an empty stomach?

CoQ10 is better absorbed with fat. If a supplement is appropriate for you, follow its instructions and consider taking it with a meal that contains some fat. You do not need to add extra oil for this purpose; olive oil, eggs or nuts already in an ordinary meal can accompany it. [3]

Morning or evening? There is no mandatory time for everyone. Breakfast or lunch may make it easier to remember. Trouble sleeping can occur, so discuss timing with your clinician or pharmacist if evening use affects your sleep. Sleep disruption is not a sign that a supplement is working. [1] [6]

How many milligrams? Neither a number on a package nor a dose in a study establishes your personal need. The reason for use, full formulation and your medicines need to be considered together. Do not exceed the product instructions or assume that a higher amount produces a better result. [3] [5]

What should you check on a CoQ10 label?

1. Find what the stated amount refers to. Is “100 mg” in one capsule or in a daily serving of two capsules? On a fictional label, if two capsules supply 100 mg in total, one supplies 50 mg. The arithmetic is an example, not a recommended dose.
2. Read the form. Ubiquinone and ubiquinol are different forms of CoQ10.
3. Check every ingredient. A combination with alpha-lipoic acid, vitamins or minerals is different from CoQ10 alone. Check whether your other products contain the same ingredients.
4. Read the use and storage instructions. Record the full product name, amount and frequency for your clinician or pharmacist. Different products from one brand can have different formulations.

Do not apply instructions found for one branded product to its entire range. The exact name and back label help identify what you would be taking. A manufacturer's serving size does not establish that you need the product. [4] [5]

Ubiquinol or ubiquinone?

Ubiquinol is the reduced form and ubiquinone the oxidized form. In a small human study, absorption depended on carrier oils and formulation as well as the form. The findings do not establish that everyone over 40 needs ubiquinol or that a more expensive form always gives better results. A higher blood concentration alone is not proof of clinical benefit. [4]

Do statins or tiredness mean you need CoQ10?

Statins can lower circulating CoQ10, but that does not mean every statin user needs a supplement. Evidence for relief of statin-associated muscle symptoms remains uncertain. Report muscle pain to the prescriber rather than stopping a statin or adding CoQ10 on your own. [1] [6]

Fatigue alone does not diagnose CoQ10 deficiency. Rare genetic deficiency disorders are a different issue from ordinary adult nutrition and require medical assessment. [2]

If heart health prompted your search, consider heart-healthy food choices alongside any supplement discussion. CoQ10 does not replace prescribed treatment or work on your overall diet. Use for heart failure or migraine needs discussion with the relevant clinician; there is no treatment dose on this page for everyone to follow. [1] [6]

Taking CoQ10 with medicines or other supplements

Warfarin, insulin and some cancer treatments are examples that need attention. CoQ10 may reduce warfarin's effect, so consult the clinician managing it before starting or stopping the supplement. The same interaction should not automatically be attributed to every blood thinner. [1] [6]

To answer “Which vitamins should I avoid with CoQ10?”, a clinician needs the ingredients and amounts in all your products. A combination with alpha-lipoic acid or a multivitamin cannot be declared safe from the names alone. Share one list of medicines and supplements, including the amount of each, with your clinician or pharmacist. [5]

Nausea, diarrhea, stomach discomfort and sleep problems can occur. Do not try to overcome a new symptom by increasing the dose; discuss whether it could be related to the product. [1] [6]