CoQ10 / Ubiquinol
Mitochondrial electron carrier for cellular energy production
What It Is
CoQ10 is a critical component of the mitochondrial electron transport chain, directly involved in ATP production. Levels decline with age and with statin use. Ubiquinol is the reduced (active) form with better bioavailability.
How It Works
CoQ10 shuttles electrons between Complex I/II and Complex III in the mitochondrial inner membrane. This is essential for oxidative phosphorylation — the primary ATP-generating pathway. It also acts as a lipid-soluble antioxidant.
The Science
Q-SYMBIO: Coenzyme Q10 as adjunctive treatment of chronic heart failure
JACC: Heart Failure (2014) · PubMed
RCT showing CoQ10 reduced major cardiovascular events in heart failure patients over 2 years.
Plasma coenzyme Q10 levels and all-cause mortality in the general population
Molecular Nutrition & Food Research (2020) · PubMed
Observational study linking higher plasma CoQ10 levels with reduced all-cause mortality.
Dosage
100–300mg/day of ubiquinol (or 200–600mg of ubiquinone). Take with fat for absorption. Statin users may need higher doses.
Safety
Very safe. Mild GI effects occasionally. No significant drug interactions except potential reduction in warfarin effectiveness at high doses.
Skeptic's Corner
While CoQ10's biochemistry is well-established, evidence that supplementation meaningfully slows aging in healthy people (not just statin users or those with deficiency) is limited. The Q-SYMBIO heart failure trial was positive but small.
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