Does coenzyme Q10 give you energy?

It genuinely takes part in the cell’s energy production, but that is not the same as feeling more energy when you take it. The systematic review on coenzyme Q10 and exercise in healthy people does not conclude a performance improvement.

Does it help with statin muscle pain?

It is its most word-of-mouth recommended use and the meta-analysis of six trials does not support it: neither less muscle pain nor less creatine kinase, and no dose relationship. Any change to a statin regimen is decided by the prescribing doctor.

Ubiquinone or ubiquinol?

Ubiquinol is the reduced form and is sold as better absorbed, at a noticeably higher price. The trial that produced clinical results in heart failure used ubiquinone, the cheap one. Paying the premium means paying for an absorption advantage, not a demonstrated outcome.

How should it be taken to be absorbed?

With food containing fat, because it is a fat-soluble molecule. Taking it on an empty stomach reduces how much reaches the blood.

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Coenzyme Q10 · Weak evidence

What coenzyme Q10 is for and what it does

The short answer. Coenzyme Q10 is a real part of the cell’s energy production chain, which is why it is sold as an energy supplement. Its solid evidence sits somewhere very specific and not at all sporty: a trial in patients with chronic heart failure, where it reduced major cardiovascular events and mortality over two years. Outside that, things fall apart. For statin muscle pain, the meta-analysis finds no benefit. And in healthy people who train, the systematic review does not conclude a performance improvement.

Reviews find no consistent effect. It is listed because it sells, not because it works. No figure on this page is attributed to a specific product: the effect belongs to the ingredient and every number carries its source next to it.

01 What it does and how much

Each row is a measured effect, with the figure the study gives and the source number. Where the evidence gives no figure, the column says so instead of making up a percentage.

Effects of coenzyme Q10 with their source
Effect	How much	Detail
Major cardiovascular events in heart failure	15% vs 26%	Over two years, in patients with moderate to severe heart failure on standard treatment, with 100 mg three times a day. This is coenzyme Q10’s good evidence, and it comes from a clinical setting, not the gym. [1]
All-cause mortality in the same trial	10% vs 18%	Same study, secondary endpoint. Worth stressing that these are patients under medical treatment, not healthy people looking for energy. [1]
Statin muscle pain	no significant benefit	The meta-analysis of six trials with 302 patients finds no effect on pain or on plasma creatine kinase, and no dose relationship. It is the most word-of-mouth recommended use, and it does not hold up. [2]
Performance in healthy people	no conclusion of improvement	The systematic review gathers thirteen studies on coenzyme Q10 and exercise in healthy people and concludes by talking about bioenergetic and antioxidant properties, not a demonstrated performance improvement. [3]

02 How to take it

Dose. 100 mg three times a day is the heart failure trial regimen. Products on the market usually provide 30 to 200 mg a day.
When. With a meal containing fat, because it is fat-soluble.
How long before you notice it. The cardiology trial measured short-term endpoints at 16 weeks, with no changes, and clinical endpoints at 2 years, where there were.

Details that change the result

There are two forms: ubiquinone and ubiquinol. Ubiquinol is sold as better absorbed and costs quite a bit more; the large trial with clinical outcomes used ubiquinone.
It is fat-soluble: taking it on an empty stomach wastes part of the tub.
It interacts with warfarin-type anticoagulants. If medication is involved, a doctor should look at this.
Being essential in the mitochondria does not mean adding more improves anything in someone without a problem. It is the same logical leap as with glutamine.

03 When it makes sense and when it does not

Worth it if

On medical advice in heart failure or another clinical condition. There the decision does not belong to a supplement website.
Beyond that, there is no sports case that justifies the cost.

Not worth it if

As an energy supplement for training or everyday tiredness.
For statin muscle pain, which is exactly where the specific meta-analysis finds no benefit.
Paying the ubiquinol premium expecting the trial result, which was obtained with the cheap form.

04 Sources

Every figure above comes from here. They are position stands from scientific societies, meta-analyses and peer-reviewed reviews: if a claim cannot hang from one of these lines, it is not on the page. References are cited in their original form.

Mortensen SA et al. The effect of coenzyme Q10 on morbidity and mortality in chronic heart failure: results from Q-SYMBIO. JACC Heart Fail. 2014;2(6):641-649. 420 pacientes, 100 mg tres veces al dia sobre tratamiento estandar: el objetivo compuesto a 2 anos se alcanzo en el 15 % del grupo Q10 frente al 26 % del placebo (HR 0,50; IC 95 % 0,32-0,80), con mortalidad total del 10 % frente al 18 %. doi:10.1016/j.jchf.2014.06.008
Banach M et al. Effects of coenzyme Q10 on statin-induced myopathy: a meta-analysis of randomized controlled trials. Mayo Clin Proc. 2015;90(1):24-34. Seis estudios, 302 pacientes: sin efecto significativo sobre el dolor muscular ni sobre la creatina quinasa plasmatica, y sin relacion dosis-respuesta. doi:10.1016/j.mayocp.2014.08.021
Sarmiento A et al. Coenzyme Q10 Supplementation and Exercise in Healthy Humans: A Systematic Review. Curr Drug Metab. 2016;17(4):345-358. Trece estudios incluidos; la revision concluye sobre propiedades bioenergeticas y antioxidantes, sin establecer una mejora del rendimiento. doi:10.2174/1389200216666151103115654

This is not medical advice. It is what some studies say about an ingredient, not a protocol for you. With an illness, medication or pregnancy involved, the decision belongs to a healthcare professional who knows you.

Questions about coenzyme Q10

Answered with the data on this page

Does coenzyme Q10 give you energy?: It genuinely takes part in the cell’s energy production, but that is not the same as feeling more energy when you take it. The systematic review on coenzyme Q10 and exercise in healthy people does not conclude a performance improvement.
Does it help with statin muscle pain?: It is its most word-of-mouth recommended use and the meta-analysis of six trials does not support it: neither less muscle pain nor less creatine kinase, and no dose relationship. Any change to a statin regimen is decided by the prescribing doctor.
Ubiquinone or ubiquinol?: Ubiquinol is the reduced form and is sold as better absorbed, at a noticeably higher price. The trial that produced clinical results in heart failure used ubiquinone, the cheap one. Paying the premium means paying for an absorption advantage, not a demonstrated outcome.
How should it be taken to be absorbed?: With food containing fat, because it is a fat-soluble molecule. Taking it on an empty stomach reduces how much reaches the blood.

And now, which to buy

Prices, kept apart from the evidence

This page explains what coenzyme Q10 does and deliberately names no brand. The comparison is the other half: 44 products from 6 stores from €0.117 per capsule, sorted by price and by how verifiable their certification is.

See the coenzyme q10 comparison

Other guides

What each supplement does, with its sources