Skip to content
Back to Low Energy & Fatigue

ingestible · for low energy & fatigue

Coenzyme Q10 (CoQ10)

Reviewed by the Nimbera editorial team · Last updated May 2026

Evidence is strongest for statin-related fatigue and mitochondrial conditions; general fatigue evidence in healthy adults is preliminary but biologically plausible.$20-50

How to use

Take 100-200 mg of ubiquinol (the reduced, more bioavailable form) or ubiquinone daily with a fatty meal to improve absorption. Start at 100 mg/day for 4 weeks, then increase to 200 mg/day if needed. Allow at least 8 weeks before judging effectiveness. Particularly relevant if you take statin medications (which deplete CoQ10 levels).

How it works

CoQ10 is a required electron carrier in the mitochondrial electron transport chain (complexes I, II, and III), which is central to ATP production in every cell. Statins inhibit the mevalonate pathway, which synthesizes both cholesterol and CoQ10, causing measurable CoQ10 depletion. A systematic review in PMC (PMC9495827) found CoQ10 at 100-300 mg/day reduced fatigue and muscle pain in statin users. Studies in healthy volunteers showed reductions in fatigue at 150-300 mg/day.

Where to buy

Pharmacies, health food stores, Amazon. Ubiquinol formulations (e.g., Qunol, Jarrow Formulas) have demonstrated superior bioavailability in clinical testing.

Typical cost: $20-50

Safety notes

Generally well tolerated; mild side effects may include nausea and digestive upset - take with food to minimize. CoQ10 may reduce the effectiveness of warfarin (blood thinner) - monitor INR closely if combining. May lower blood pressure - use caution with antihypertensive medications. Some evidence of interaction with chemotherapy agents; consult an oncologist before use during cancer treatment.

Drug & supplement interactions

  • Always tell your doctor or pharmacist about any supplements you take.
  • Interactions can occur with prescription medications, blood thinners, and immunosuppressants.
  • Herbal remedies can affect how the body absorbs or metabolises drugs.
  • Check drugs.com interactions checker before starting.

Clinical source

PMC RCT - CoQ10 in Statin Patients (2022)

This information is compiled from primary clinical literature and is for informational purposes only. It is not a substitute for professional medical advice. Read our full disclaimer.