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Limited evidenceLongevity & antioxidants

MitoQ (Mitoquinol Mesylate)

A CoQ10 derivative engineered to accumulate inside mitochondria. Small trials from one research group show improved blood vessel function in older adults; broader anti-ageing and energy claims are not supported.

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What the science says

  • Vascular function in older adults Limited evidence

    A randomized crossover trial in healthy older adults found six weeks of 20 mg/day MitoQ improved brachial artery flow-mediated dilation and reduced aortic stiffness compared with placebo. The sample was small, and a later acute-dosing study showed the response depends heavily on baseline fitness and vessel function.

  • Safety at high acute doses Limited evidence

    A randomized crossover trial found a single high dose of MitoQ did not raise urinary markers of kidney injury in healthy adults. This addresses one safety question and says nothing about efficacy or long-term use.

  • Energy, ageing and neurodegeneration Limited evidence

    MitoQ has been trialled in Parkinson's disease and hepatitis C without clear clinical benefit, and no trial supports the general claims about energy or slowed ageing. The mitochondrial-targeting chemistry is well established; the outcomes are not.

Dosage & safety

Studied doseHuman trials generally used 10–20 mg/day of mitoquinol mesylate, taken in the morning on an empty stomach. Higher doses have not shown greater benefit.
SafetyGenerally well tolerated at 10–20 mg/day; gastrointestinal upset is the most common complaint and higher doses can cause nausea. Long-term safety is unknown, and as with any potent antioxidant there is a theoretical concern about blunting exercise adaptations. Not studied in pregnancy, breastfeeding or children.

How to take it

TimingMorning.
With food?On an empty stomach, at least 30 minutes before food, as in the trials.
Worth knowingHigher doses have not performed better and mainly add nausea, so there is no reason to go above 20 mg.

Interactions

With other supplements

  • high-dose vitamin C and vitamin E

    Stacking potent antioxidants around training may blunt the adaptations exercise is meant to produce. avoid stacking them, or take them away from your hardest sessions

Well-established interactions only — this is not a complete list. Always tell your doctor and pharmacist what you take.

Frequently asked questions

Does MitoQ work?

The evidence for MitoQ is limited: small trials from one research group found 20 mg/day for six weeks improved blood vessel function in healthy older adults. Trials in Parkinson's disease and hepatitis C showed no clear benefit, and energy or anti-ageing claims are unsupported.

How much MitoQ should I take per day?

Human trials of MitoQ generally used 10–20 mg/day, taken in the morning on an empty stomach at least 30 minutes before food. Higher doses have not shown more benefit and mainly add nausea.

Does MitoQ have side effects?

MitoQ is generally well tolerated at 10–20 mg/day; stomach upset is the most common complaint, and higher doses can cause nausea. Long-term safety is unknown, and there is a theoretical concern that potent antioxidants blunt exercise adaptations.

Is MitoQ better than CoQ10?

MitoQ is a CoQ10 derivative engineered to accumulate inside mitochondria, and that chemistry is well established. What is not established is any clinical outcome beyond small vascular-function trials.

Scientific references

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