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Ubiquinol vs Ubiquinone: Why the Form of CoQ10 Matters
CoQ10 is one of the most popular supplements in the world, and for good reason. Every cell in your body relies on it to turn food into energy.
But look closely at a supplement label and you'll see CoQ10 listed in one of two forms: ubiquinone or ubiquinol. They sound almost identical. They're not.
One is the form your body has to convert before it can use it. The other is the active form, ready to go. Here's what that difference means for your energy, your cells and how you age.
What Is CoQ10?
Coenzyme Q10 (CoQ10) is a compound your body makes naturally. It's found in the membranes of almost every cell, with the highest levels in hard-working organs like the heart, liver and kidneys.
CoQ10 has two main jobs:
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Energy production. Inside your mitochondria, CoQ10 carries electrons along the electron transport chain. This is the process that converts carbohydrates and fats into ATP, the energy currency your cells run on.
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Antioxidant defense. CoQ10 is a fat-soluble antioxidant that helps protect cell membranes, DNA and proteins from damage caused by free radicals.
In short: no CoQ10, no efficient cellular energy. That's why it matters so much for longevity.
Why CoQ10 Levels Drop With Age
Your body makes its own CoQ10, but research shows that production becomes less efficient as we get older. At the same time, older adults tend to produce more free radicals, which puts more demand on the CoQ10 they do have.
Food doesn't fill the gap. A typical Western diet provides only around 3 to 5mg of CoQ10 a day, mostly from meat, fish and organ meats.
A few other things can affect CoQ10 status:
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Statins. These cholesterol-lowering medications work by blocking the same pathway your body uses to make CoQ10. People who take statins may have lower CoQ10 levels.
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Higher oxidative stress. Studies have found that a larger share of the CoQ10 circulating in older adults is in its oxidized form, a sign the body's antioxidant defenses are working harder.
If you take a prescription medication, especially statins or blood thinners like warfarin, talk to your doctor before adding CoQ10 to your routine.
Ubiquinone vs Ubiquinol: What's the Difference?
CoQ10 exists in two forms that your body constantly switches between:
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Ubiquinone is the oxidized form. It's the most common form in supplements because it's cheaper and more stable to manufacture.
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Ubiquinol is the reduced, active form. It's the version that acts as an antioxidant, and it's the form most of the CoQ10 in your bloodstream takes. In healthy adults, around 90% of circulating CoQ10 is ubiquinol.
When you take ubiquinone, your body has to convert it into ubiquinol after absorption. Ubiquinol skips that step.
|
Ubiquinone |
Ubiquinol |
|
|
Form |
Oxidized |
Reduced (active) |
|
Conversion needed? |
Yes, the body converts it to ubiquinol |
No, already in the active form |
|
Antioxidant activity |
Indirect, after conversion |
Direct |
|
Common in supplements? |
Yes, the most common form |
Less common, costs more to produce |
|
Used in Tmrw |
No |
Yes, 100mg per serve |
Does the form actually matter?
In a 2018 study of older men, ubiquinol raised CoQ10 status more effectively than ubiquinone. A 2020 study in adults aged 65 to 74 found ubiquinol produced 1.7 times higher absorption than ubiquinone at the same 100mg dose, although that result didn't reach statistical significance.
What the research does agree on: the body needs CoQ10 as ubiquinol to use it, and the ability to keep CoQ10 levels topped up declines with age. Choosing the active form takes one step out of the process.
What CoQ10 Supports
CoQ10 is one of the most studied nutrients in healthy aging research. Here's where the evidence is strongest:
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Cellular energy. As a key part of the electron transport chain, CoQ10 supports the mitochondria in producing the energy your cells need to function.
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Heart health. The heart is one of the most energy-hungry organs in the body and holds some of the highest concentrations of CoQ10. Research on CoQ10 and cardiovascular health is among the most robust in the field.
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Antioxidant protection. In its ubiquinol form, CoQ10 helps protect cell membranes and circulating fats (like LDL particles) from oxidative damage.
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Healthy aging. Because CoQ10 production slows with age, keeping levels supported is a common focus of longevity routines.
CoQ10 also has an excellent safety record. Mild side effects like digestive upset are uncommon.
How Tmrw Uses CoQ10
Every scoop of Tmrw delivers 100mg of CoQ10 as ubiquinol, the active form your cells use directly.
It doesn't work alone. CoQ10 sits alongside other ingredients that support the same energy pathways:
|
Ingredient |
Amount per serve |
Role |
|
CoQ10 (as ubiquinol) |
100mg |
Carries electrons in mitochondrial energy production |
|
NMN |
500mg |
Supports NAD⁺, the coenzyme that powers cellular energy and repair |
|
Acetyl-L-Carnitine |
750mg |
Helps transport fats into mitochondria to be used for energy |
|
Alpha-Lipoic Acid |
100mg |
Antioxidant that helps recycle other antioxidants |
|
PQQ |
Part of the Longevity Activation Blend |
Supports mitochondrial health |
Together, they form a mitochondrial support system in one daily drink, alongside 88 science-backed ingredients in total.
Tmrw is also NSF Certified for Sport, so what's on the label is independently verified to be in every scoop.
Try Tmrw risk-free with our 30-day money-back guarantee.
Sources
-
Pravst I, et al. Comparative Bioavailability of Different Coenzyme Q10 Formulations in Healthy Elderly Individuals. Nutrients, 2020.
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Zhang Y, Liu J, Chen XQ, Chen CYO. Ubiquinol is superior to ubiquinone to enhance Coenzyme Q10 status in older men. Food & Function, 2018. Study record: ClinicalTrials.gov NCT03020680.
-
Niklowitz P, et al. Coenzyme Q10 serum concentration and redox status in European adults: influence of age, sex, and lipoprotein concentration. Journal of Clinical Biochemistry and Nutrition, 2016.
-
Mayo Clinic. Coenzyme Q10.
-
National Center for Complementary and Integrative Health. Coenzyme Q10.
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