Everything about coenzyme Q10 (CoQ10): how this essential cellular energy production component affects heart health, athletic performance and acts as an antioxidant. Ubiquinol vs ubiquinone, doses, interaction with statins.

Coenzyme Q10 (CoQ10, ubiquinone) is a vitamin-like substance found in every human body cell. Its main function is to participate in the electron transport chain in mitochondria, producing ATP (cellular energy). Without CoQ10, efficient energy production is impossible. Organs with the highest energy demand — heart, liver, kidneys — have the highest CoQ10 concentration. After age 25, CoQ10 production in the body begins to decline.
| Property | Ubiquinone | Ubiquinol |
|---|---|---|
| Form | Oxidized (standard) | Reduced (active) |
| Absorption | Intermediate | 3-4x better |
| Price | Cheaper | More expensive (2-3x) |
| Best Use | For young people | For older adults (>40 y.) |
| Recommendation | Good, cheaper | Best, more expensive |
After age 40, the body's ability to convert ubiquinone to ubiquinol decreases. For older people, ubiquinol is a better choice, although more expensive.
CoQ10 (100-300 mg/d) improved ejection fraction in patients with heart failure and reduced hospitalization risk. Recommended as adjunct therapy.
Studies with CoQ10 showed a small but significant improvement in endurance — especially in older athletes and people with CoQ10 deficiency.
CoQ10 (especially the ubiquinol form) is a strong fat-soluble antioxidant that protects cell membranes from oxidative stress.
Meta-analysis: CoQ10 supplements significantly reduce statin-induced muscle pain and weakness. 100-200 mg/d is the standard recommendation.
Directly — no. However, better mitochondrial function may increase metabolic efficiency. The effect is small.
Ubiquinol is recommended for people over 40, people with digestive disorders, or those who want maximum absorption. For younger healthy people, standard ubiquinone is sufficient.