CoQ10 (Ubiquinol)

Also known as: coenzyme Q10, ubiquinone, CoQ10, ubiquinol

Grade A — Strong Evidenceantioxidantmitochondrial

Recommended Dosage

100300 mg

With fat-containing meal. Split dose if >200mg/day.

Coenzyme Q10 is essential for mitochondrial energy production — it's a key component of the electron transport chain in every cell. Your body produces it naturally, but levels decline with age and are further depleted by statin medications. The ubiquinol form (reduced CoQ10) is better absorbed than ubiquinone, particularly as you age. The landmark Q-SYMBIO trial demonstrated significant reductions in cardiovascular mortality with supplementation.

TL;DR: Critical for mitochondrial energy production. Q-SYMBIO trial showed 43% cardiovascular mortality reduction in heart failure. Depleted by statins.

Last reviewed: 2026-03-09

Evidence Rating: Grade A — Strong Evidence

Multiple high-quality RCTs, systematic reviews, or meta-analyses with consistent findings.

Forms Comparison

Ubiquinol

✓ High Absorption

The reduced, active form. Better absorbed, especially for people over 40 whose conversion ability declines.

over 40statin usersheart health

Ubiquinone

~ Moderate Absorption

The oxidized form your body must convert to ubiquinol. Cheaper but less bioavailable with age.

under 40budget option

Interaction Warnings

Blood thinners (warfarin)Moderate

CoQ10 has vitamin K-like structure; may reduce anticoagulant effect. Monitor INR.

StatinsLow

Statins deplete CoQ10 — supplementation recommended

AntihypertensivesLow

Mild additive blood pressure lowering

⚠️ Important Notes

  • Use ubiquinol form for better absorption (especially over 40)
  • Essential if taking statins
  • Mild energizing effect — take morning/early afternoon

Clinical Evidence (3 studies)

Q-SYMBIO trial: CoQ10 in heart failure

Mortensen SA et al. (2014) — JACC Heart Fail

CoQ10 100mg TID reduced MACE and all-cause mortality in heart failure (n=420)

View on PubMed

CoQ10 and blood pressure: meta-analysis

Rosenfeldt FL et al. (2007) — J Hum Hypertens

Meta-analysis of 12 RCTs: systolic -11.1 mmHg, diastolic -7.5 mmHg

View on PubMed

CoQ10 for statin-associated muscle symptoms

Banach M et al. (2015) — J Am Coll Cardiol

Meta-analysis: improved subjective muscle pain in statin users

View on PubMed

Related Supplements

🧪 Get Your Personalized Stack

See how CoQ10 (Ubiquinol) fits with your goals and current supplements — AI-powered, evidence-graded recommendations.

⚕️ Important Disclaimer

This information is for educational purposes only. It is not medical advice. Always consult a healthcare provider before starting any supplement regimen, especially if you take medications or have health conditions.

Evidence Stack does not sell supplements and has no affiliate relationships with supplement manufacturers.