Coenzyme Q10

Also known as: CoQ10, ubiquinone, ubiquinol, coenzyme Q

Evidence under review. — Not yet rated

Natural antioxidant that supports cellular energy, fertility, and may reduce oxidative stress.

What it does

Coenzyme Q10 (CoQ10) is a naturally occurring antioxidant found in every cell of the body, playing a key role in mitochondrial energy production. Clinical research shows it may improve ovarian...
Evidence quality

Evidence base hasn't been formally rated yet. See research below.
Clinical dose

30-600 mg daily depending on indication
Found in

Augustinus Bader The Hair Revitalizing Complex, Supp, Beyond Collagen Powder Sachets and 8 more

What the Science Says

Coenzyme Q10 (CoQ10) is a naturally occurring antioxidant found in every cell of the body, playing a key role in mitochondrial energy production. Clinical research shows it may improve ovarian response and embryo quality in women undergoing fertility treatments, and animal studies suggest it reduces inflammation and oxidative damage in diabetic eye disease. It also shows promise for supporting physical function in older adults and reducing exercise-related oxidative stress, though human evidence for some uses remains limited.

What It Doesn't Do

Not proven to extend human lifespan. Won't replace fertility treatments on its own. No strong evidence it directly improves pregnancy rates. Not a proven treatment for multiple sclerosis or skin aging in humans based on current data. Don't expect dramatic athletic performance gains.

Evidence-Based Benefits

Improves oocyte count and ovarian reserve markers in women with poor ovarian response undergoing IVF.

Moderate Evidence

Effective at: 600 mg/day for 1+ month before and during IVF cycle

Supporting studies (click to view on PubMed):

PMID 41800295

Reduces oxidative stress markers and inflammatory signaling in diabetic tissue.

Weak Evidence

Effective at: 30 mg/kg/day (animal data; human equivalent unclear)

Supporting studies (click to view on PubMed):

PMID 42116018

May support recovery from high-intensity exercise by reducing oxidative stress in athletes.

Weak Evidence

Effective at: No established dose from provided studies

Supporting studies (click to view on PubMed):

PMID 42152252

Ubiquinol formulations absorb significantly better than standard ubiquinone in healthy adults.

Moderate Evidence

Effective at: Dose-matched comparison; specific mg not reported

Supporting studies (click to view on PubMed):

PMID 41789786

Absorption & Bioavailability

Moderate to Good — ubiquinol (reduced form) absorbs significantly better than ubiquinone (oxidized form). Novel formulations like cocrystal soft gels show substantially higher plasma concentrations than standard ubiquinone. Fat-soluble; best absorbed with a meal containing fat.

Red Flags to Watch For

Ubiquinone and ubiquinol are not equivalent — cheaper ubiquinone products may absorb poorly, especially in older adults
Most dramatic claims (anti-aging, MS treatment, cancer support) are based on preclinical or animal data only
Fertility benefits shown in oocyte counts and embryo quality, but pregnancy rate improvements were not statistically significant in the provided RCT
Supplement quality varies widely — 1,000+ registered products with no standardized formulation requirements

Supplement

Mostly Legit

Thorne CoQ10 Softgels

Supplement

Mostly Legit

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Frequently Asked Questions

What does Coenzyme Q10 do?

Natural antioxidant that supports cellular energy, fertility, and may reduce oxidative stress.

What is the effective dose of Coenzyme Q10?

30-600 mg daily depending on indication

Is Coenzyme Q10 safe?

Ubiquinone and ubiquinol are not equivalent — cheaper ubiquinone products may absorb poorly, especially in older adults

What doesn't Coenzyme Q10 do?

Not proven to extend human lifespan.

Research Sources

PubMed
NIH DSLD

This information is for educational purposes only and is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Last updated: 2026-05-25