CoQ10 and Egg Quality Support
When supporting egg quality—especially in women over 35—CoQ10 is a commonly recommended over-the-counter supplement. A typical dose is 200 mg three times daily, ideally taken with a meal that includes healthy fat, since CoQ10 is a fat-soluble nutrient (like vitamin D).
Foods Highest in CoQ10
Animal sources (most concentrated):
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Organ meats (heart, liver, kidney — especially beef and chicken)
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Fatty fish (sardines, mackerel, salmon, tuna, trout, herring)
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Beef
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Pork
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Chicken (especially thighs and dark meat)
Plant-based sources (moderate amounts):
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Spinach
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Broccoli
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Cauliflower
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Sweet potatoes
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Peanuts
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Soybeans
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Sesame seeds
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Pistachios
Other:
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Eggs (yolks contain more than whites)
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Whole grains (wheat germ, bran, oats)
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Legumes (lentils, peanuts, soybeans)
References
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Mayo Clinic: Coenzyme Q10 - https://www.mayoclinic.org/drugs-supplements-coenzyme-q10/art-20362602
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Linus Pauling Institute: Coenzyme Q10 Sources - https://lpi.oregonstate.edu/mic/dietary-factors/coenzyme-Q10#toc-sources
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NIH / PubMed Central: Coenzyme Q10 Review - https://pmc.ncbi.nlm.nih.gov/articles/PMC3178961