CoQ10 (coenzyme Q10): what it is and how much people take
Coenzyme Q10 is a substance the body makes, found mostly in the heart, liver, kidneys and pancreas. Studies have looked at heart disease, muscle pain from statins, blood pressure and Parkinson's disease, with mixed results. Studies have usually used 90 to 390 milligrams a day. It may cause mild insomnia or stomach upset.
General information, not medical advice. Check with a doctor or pharmacist before taking a supplement, especially if you are pregnant or breastfeeding, take any medicine, or are under 18.
How much people take
| What studies looked at | Studies have looked at heart disease, muscle pain from statins, blood pressure and Parkinson's disease, with mixed results. |
|---|---|
| Amounts studies used | 90 to 390 milligrams a day. |
| Official upper limit | None set |
Cautions and interactions
- It may cause mild insomnia or stomach upset.
- It may interact with warfarin and insulin.
Dose questions
Quick answers
- What is coenzyme Q10?
- Coenzyme Q10 is a substance the body makes, found mostly in the heart, liver, kidneys and pancreas.
- What has coenzyme Q10 been studied for?
- Studies have looked at heart disease, muscle pain from statins, blood pressure and Parkinson's disease, with mixed results.
- How much coenzyme Q10 do studies use?
- 90 to 390 milligrams a day.
- Is coenzyme Q10 safe?
- It may cause mild insomnia or stomach upset. It may interact with warfarin and insulin.
Sources
- NCCIH (US National Institutes of Health)
https://www.nccih.nih.gov/health/coenzyme-q10
Ask Supplement Check yourself
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In Claude or any app that takes MCP connectors, add https://goodturn-mcp.pages.dev/supplementcheck/mcp and ask: “Is 200 mg of CoQ10 too much?”