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Antioxidant

CoQ10 (Ubiquinol)

Also known as: Ubiquinol, Coenzyme Q10, CoQ10, Ubiquinone

B
Evidence

Ubiquinol is the active, reduced form of CoQ10, a fat-soluble antioxidant essential for mitochondrial ATP production and cellular energy metabolism. It supports heart health, cellular energy, and may reduce statin-related side effects.

Primary uses

  • Cardiovascular health and heart function
  • Mitochondrial ATP production and energy
  • Antioxidant protection
  • Counteracting statin-induced CoQ10 depletion
  • Aging and age-related vitality

How it works

  • Essential cofactor in the electron transport chain (Complex I–III) for ATP synthesis
  • Direct free radical scavenger and antioxidant
  • Regenerates vitamin E and other antioxidants
  • Supports endothelial function and vascular health

Dosage

Typical range
100–300 mg daily
Timing
With meals (fat-soluble; requires dietary fat for absorption)
With food
Essential; take with a meal containing fat for optimal bioavailability
Duration
Effects build over 4–12 weeks; long-term use is safe and appropriate
Special populations
Statin users: 100–200 mg daily recommended to replenish depleted levels; elderly may benefit from higher doses due to age-related decline

Forms

  • Ubiquinol (reduced, active form)· 70/100
  • Ubiquinone (oxidized form, less bioavailable)· 70/100

Safety

Common side effects

  • Mild gastrointestinal upset (very rare)
  • Insomnia or sleep disturbance (occasional, especially at high doses or late timing)
  • Nausea (minimal)

Contraindications

  • None known; well-tolerated across populations
  • Caution in blood-clotting disorders (minor vitamin K-like activity)

Evidence notes

Strong evidence for cardiovascular benefit (especially heart failure and hypertension); well-established ATP production role; ubiquinol form shows superior bioavailability vs. ubiquinone; statin interaction supported by multiple RCTs.

Grade B: Some human trials support key claims; further confirmation needed.

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Medical disclaimer. This page is educational and does not replace advice from a qualified healthcare provider.