Mobility/Performance/Cognition

Idebenone

Synthetic antioxidant similar to CoQ10 studied for vision loss in Leber's hereditary optic neuropathy and neurological function in Friedreich's ataxia.

score

evidence

Caution

risk

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Use with caution

This supplement may interact with medications, medical conditions or sensitive populations. Review safety before use.

Overview

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Safety

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Quick Take

Only worth considering if you have a diagnosed mitochondrial disorder like LHON or Friedreich's ataxia; otherwise skip.

Idebenone is a synthetic analog of coenzyme Q10 developed to treat mitochondrial dysfunction. It shuttles electrons in the electron transport chain, bypassing impaired complex I to support cellular ATP production. Clinical trials show it may slow vision loss in Leber's hereditary optic neuropathy and improve neurological function in Friedreich's ataxia, though results are mixed. Evidence for cognitive enhancement or general fatigue in healthy adults remains weak. It is primarily relevant to individuals with diagnosed mitochondrial disorders.

Potential benefits

Slows LHON vision loss

Improves Friedreich's symptoms

May reduce mitochondrial fatigue

May slow cognitive decline

Protocol

Amount

900 mg

Frequency

Divided into 3 daily doses with meals

When

With meals containing fat to improve absorption; divided doses reduce gastrointestinal upset.

Onset Time

8-12 weeks for neurological or visual outcomes

Who Should Consider

Patients with Friedreich's ataxia

Patients with Leber hereditary optic neuropathy

Individuals with diagnosed mitochondrial myopathy

People with rare complex I deficiencies

How It Works

Idebenone is a lipophilic quinone that acts as an electron carrier in the mitochondrial respiratory chain, transferring electrons from complex I and II directly to complex III. This bypasses complex I deficiencies common in certain mitochondrial diseases, supporting ATP synthesis and reducing oxidative stress in affected tissues.

Updated 5/19/2026