CoQ10
Powers mitochondrial energy production: naturally declines with age and statin use.
What is CoQ10?
CoQ10 (coenzyme Q10) is a fat-soluble compound found in virtually every cell of the body, where it plays an essential role in the mitochondrial electron transport chain, the process that generates ATP energy. It also functions as an antioxidant. Natural CoQ10 production declines with age; statins (cholesterol-lowering drugs) further deplete it by inhibiting the same pathway used to make both cholesterol and CoQ10.
What does the evidence say?
A 2014 randomised controlled trial by Mortensen et al. (Q-SYMBIO study) found CoQ10 at 300mg/day reduced major cardiovascular events by 43% and all-cause mortality by 42% in patients with heart failure over 2 years. Meta-analyses confirm improvements in exercise capacity and energy levels. Research on statin-related muscle pain (myopathy) shows mixed results but several trials demonstrate benefit in CoQ10-depleted statin users.
Good evidence from several studies, but with some limitations in size, duration, or methodology.
Dosage guide
| Effective dose | 100–300mg per day |
| Maximum dose | 600mg/day (used in neurological research without significant adverse effects) |
| Timing | With a fat-containing meal. CoQ10 is fat-soluble. |
Best form to buy
Ubiquinol (the active, reduced form) is better absorbed than ubiquinone, particularly in men over 50 whose conversion efficiency declines. Softgel formulations absorb better than capsules.
Who benefits most
Men over 40, men on statins, and anyone with cardiovascular concerns or fatigue. Priority increases with age.
Side effects and safety
Generally very well tolerated. Mild GI discomfort at high doses. Can mildly lower blood pressure.
“Essential if you're on statins: your doctor probably won't mention CoQ10 depletion but it is real and measurable. For everyone else over 45, it's a reasonable longevity investment. Buy ubiquinol if you're over 50.”