Coenzyme Q10 (Ubiquinone, Ubiquinol)
Pronunciation: (koh-EN-zime KYOO ten).
- Generic name
- Coenzyme Q10 (ubiquinone, ubiquinol)
- Brand names
- Qunol, Ubicar, BioCeuticals CoQ10, Nature Made CoQ10, Ethical Nutrients CoQ10, Thompson's CoQ10
- Drug class
- Nutritional supplement
Availability and supply rules vary by country
Trade names by country: United States
Australia: · Full directory
What Coenzyme Q10 (ubiquinone, ubiquinol) is and how it works
Uses, formulations, monitoring, and supply rules can differ by patient, product, and country. Follow the exact local product information and professional advice.
Mechanism of action: how Coenzyme Q10 (ubiquinone, ubiquinol) works
Coenzyme Q10 is a lipid-soluble benzoquinone that functions as an essential component of the mitochondrial electron transport chain. It facilitates the transfer of electrons from complexes I and II to complex III, playing a critical role in ATP synthesis. CoQ10 also acts as an antioxidant, protecting cell membranes and mitochondrial structures from oxidative damage. (1) (2)
What Coenzyme Q10 (ubiquinone, ubiquinol) is used for
Antioxidant support
Antioxidant support (2)
Cardiovascular health
Cardiovascular health (2)
Before taking Coenzyme Q10 (ubiquinone, ubiquinol)
Do not take / not appropriate for
- Contraindicated in individuals with hypersensitivity to CoQ10 or its excipients. (Contraindication) (2)
Tell your clinician about
(2)How to take Coenzyme Q10 (ubiquinone, ubiquinol)
- General Instructions: Take CoQ10 exactly as directed on the label or by your healthcare provider. It is usually taken once or twice daily with food to improve absorption.. Adult Dosing: Typical adult doses range from 100 mg to 200 mg per day, divided into one or two doses. Higher doses may be used for specific medical conditions under medical supervision.. Pediatric Dosing: Safety and dosing in children have not been well established. Use only under specialist supervision.. Administration: Swallow capsules or tablets whole with a glass of water, preferably with a meal.. When To Stop: If you are considering stopping CoQ10, especially if used for a chronic condition, contact your healthcare provider first and follow their advice.. Storage: Store at room temperature, away from moisture and heat. Keep out of reach of children.
- This page does not provide a dose calculator. Dosing must follow the prescriber, pharmacist, or product label.
Procedures and treatment changes
Tell the treating team before surgery, procedures, or any medicine change. Do not alter treatment without the responsible clinician. (2)
Missed dose
If you miss a dose, take it as soon as you remember. If it is almost time for your next dose, skip the missed dose. Do not take an extra dose to make up for a missed one.
Overdose
CoQ10 overdose is rare and typically not life-threatening. Symptoms may include diarrhea, nausea, or headache. In case of significant overdose, seek medical advice or contact your local poison control center. (2)
Side effects
Side effects and their urgency vary; report severe, persistent, or concerning symptoms to a healthcare professional.
Digestive upset: nausea, vomiting, diarrhea, reduced appetite, heartburn, or upper-abdominal discomfort
Incidence: Uncommon (under 1% of users, per NCCIH); generally reversible
Insomnia
Incidence: Uncommon, per NCCIH
Headache
Incidence: Reported in the clinician-authored database; frequency not established
Serious warnings
May interact with blood thinners (e — serious
Symptoms: May interact with blood thinners (e.g., warfarin) and affect bleeding risk. Use caution in people with liver disease. Not recommended in pregnancy or breastfeeding unless prescribed. May lower blood sugar; monitor if diabetic. Consult your doctor before combining with other supplements or medications.
Action: Follow the urgency stated and seek prompt or emergency care when indicated. (2)
Contraindications recorded in the clinician database — serious
Symptoms: Contraindications recorded in the clinician database: Contraindicated in individuals with hypersensitivity to CoQ10 or its excipients. Use with caution in patients on anticoagulant therapy, those with liver dysfunction, or in pregnant/lactating women due to insufficient safety data.
Action: Follow the urgency stated and seek prompt or emergency care when indicated. (2)
Interactions
| Medicine or test | Effect | Action |
|---|---|---|
| Recorded interactions | CoQ10 may interact with anticoagulants (such as warfarin), potentially reducing their effectiveness and increasing the risk of clotting. It may also interact with blood pressure medications, diabetes medications, and some chemotherapy agents. Always inform your healthcare provider about all supplements and medicines you are taking. | (1) |
Pregnancy, breastfeeding, kidney/liver function, age
Pregnancy
Neither the clinician-authored record nor the NCCIH page reviewed for this page establishes safety of CoQ10 supplementation in pregnancy; the clinician record advises against use unless prescribed. Use only on the advice of a healthcare provider. (2)
Breastfeeding
Neither the clinician-authored record nor the NCCIH page reviewed for this page establishes safety of CoQ10 supplementation while breastfeeding; the clinician record advises against use unless prescribed. Use only on the advice of a healthcare provider. (2)
Children
Frequency: Not applicable. Weight Based: Not established; safety not established in children. Max Daily Dose: Not applicable. Max Single Dose: Not applicable. Age Restrictions: Not recommended for pediatric use (2)
Renal_impairment
Renal: the NCCIH page reviewed for this page states no renal-impairment guidance; no dose adjustment is specified. Hepatic: the clinician-authored record advises caution in patients with liver dysfunction due to insufficient safety data; NCCIH gives no formal hepatic dose-adjustment table. Organ-impairment status should be assessed by the prescriber. (2)
Hepatic_impairment
Renal: the NCCIH page reviewed for this page states no renal-impairment guidance; no dose adjustment is specified. Hepatic: the clinician-authored record advises caution in patients with liver dysfunction due to insufficient safety data; NCCIH gives no formal hepatic dose-adjustment table. Organ-impairment status should be assessed by the prescriber. (2)
Monitoring
(2)Storage
Store at room temperature, away from moisture and heat. Keep out of reach of children.
Professional information
Clinician-facing context only. This section does not replace current product labeling.
General
Indication: Antioxidant support
Dose summary: 100-200 mg per day, taken orally
Renal context: The NCCIH page reviewed for this page states no renal-impairment guidance for coenzyme Q10. No dose adjustment is specified; renal status should be assessed by the prescriber. (1) (2)
Hepatic guidance
The NCCIH page reviewed for this page states no hepatic-impairment guidance for coenzyme Q10; the clinician-authored record separately advises caution in patients with liver dysfunction due to insufficient safety data. No formal dose-adjustment table is available; hepatic status should be assessed by the prescriber.
Frequently asked questions
What is Coenzyme Q10 used for?
CoQ10 is taken as a supplement by people hoping to support heart health, blood pressure, migraine frequency, or statin-related muscle pain. Evidence for these uses is mixed or inconclusive — current evidence does not support a benefit for statin-related muscle pain specifically, and effects on blood pressure and heart failure are minimal or mixed in studies. It is also being studied for neurological and metabolic disorders.
Is CoQ10 safe to take daily?
For most people, daily use of CoQ10 at recommended doses is considered safe. Always follow your healthcare provider’s advice and report any unusual symptoms.
Can CoQ10 be taken with other medications?
CoQ10 can interact with certain medications, especially blood thinners like warfarin. Always check with your healthcare provider before starting CoQ10 if you are on prescription medications.
How long does it take for CoQ10 to work?
Some people may notice benefits within a few weeks, but optimal effects, especially for heart or muscle conditions, may take up to 8–12 weeks.
Are there any dietary restrictions while taking CoQ10?
There are no specific dietary restrictions, but taking CoQ10 with a meal containing fat can improve absorption.
Can pregnant or breastfeeding women take CoQ10?
Safety in pregnancy and breastfeeding has not been established. Use only if prescribed by a healthcare provider.
Is CoQ10 suitable for children?
CoQ10 use in children should be supervised by a specialist, as safety and dosing are not well established.
What happens if I take too much Coenzyme Q10?
Taking excessive amounts of Coenzyme Q10 is generally not associated with severe toxicity due to its low bioavailability. However, high doses might lead to mild gastrointestinal upset, such as nausea or diarrhea. If you suspect an overdose or experience unusual symptoms, it is crucial to seek emergency medical attention immediately for proper evaluation and guidance.
Can I drink alcohol while taking Coenzyme Q10?
As a nutritional supplement, Coenzyme Q10 does not have a direct contraindication with alcohol consumption. However, excessive alcohol intake can deplete nutrient levels and potentially counteract the beneficial effects of supplements. It is generally advisable to consume alcohol in moderation and discuss any concerns with your healthcare provider, especially if you have underlying health conditions.
Is Coenzyme Q10 safe during pregnancy?
The safety of Coenzyme Q10 during pregnancy is not definitively established, and it falls under the 'Consult Doctor' pregnancy category. Due to limited research on its effects in pregnant individuals and developing fetuses, it is strongly recommended to consult with your healthcare provider before taking Coenzyme Q10 if you are pregnant or planning to become pregnant. They can assess the potential risks and benefits for your specific situation.
What is the mechanism of action of Coenzyme Q10 (ubiquinone, ubiquinol)?
Coenzyme Q10 is a lipid-soluble benzoquinone that functions as an essential component of the mitochondrial electron transport chain. It facilitates the transfer of electrons from complexes I and II to complex III, playing a critical role in ATP synthesis. CoQ10 also acts as an antioxidant, protecting cell membranes and mitochondrial structures from oxidative damage. (1) (2)
What is the generic name of Coenzyme Q10 (Ubiquinone, Ubiquinol)?
The generic name is Coenzyme Q10 (ubiquinone, ubiquinol). It is sold under brand names including Qunol, Ubicar, BioCeuticals CoQ10, Nature Made CoQ10, Ethical Nutrients CoQ10, Thompson's CoQ10.
What class of drug is Coenzyme Q10 (ubiquinone, ubiquinol)?
Coenzyme Q10 (Ubiquinone, Ubiquinol) is classed as: Nutritional supplement.
References
- Coenzyme Q10 — MedGuideGlobal clinician-authored medicine recordMedGuideGlobal · Global (internal clinician compilation) · accessed 2026-08-06 · source 1
- Coenzyme Q10National Center for Complementary and Integrative Health, NIH · United States · accessed 2026-08-06 · source 2
- TRUEVITE (COENZYME Q10, ALPHA-LIPOIC ACID, ASCORBIC ACID, BETA-CAROTENE, CHOLECALCIFEROL, CHROMIUM, COPPER, D-ALPHA TOCOPHERYL ACID, FOLIC ACID, MAGNESIUM, MANGANESE, METHYLCOBALAMIN, MOLYBDENUM AMINO ACID, NIACINAMIDE, POTASSIUM, PYRIDOXINE, RIBOFLAVIN, SELENIUM, THIAMINE, ZINC) TABLET [TRIVIA PHARMACEUTICALS, LLC] — US prescribing information (DailyMed SPL)U.S. National Library of Medicine (DailyMed) · US · accessed 2026-08-14 · source 3
- Coenzyme Q10 — patient drug information (MedlinePlus)U.S. National Library of Medicine (MedlinePlus) · US · accessed 2026-08-14 · source 4
- Coenzyme Q10 — RxNorm normalized drug concept (RXCUI 21406)U.S. National Library of Medicine (RxNorm) · US · accessed 2026-08-14 · source 5
Brand names by country
Single-ingredient Coenzyme Q10 (ubiquinone, ubiquinol) names are shown separately by country. Product availability, strengths, and supply rules can change; combination products are not included here.
Priority countries
United States
- Source NaturalsSource Naturals
- Natural FactorsNatural Factors
- BluebonnetBluebonnet
- DCDC
- Wonder LaboratoriesWonder Laboratories
- Tishcon Corp.Tishcon Corp.
- BulkSupplements.comBulkSupplements.com
- Allergy Research GroupAllergy Research Group
- NutriCologyNutriCology
- OL Olympian LabsOL Olympian Labs