Is 200 mg of CoQ10 too much?
200 milligrams of coenzyme Q10 is in the range 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.
The figures
| Amount checked | 200 mg |
|---|---|
| Answer | In the range studies used |
| Amounts studies used | 90 to 390 milligrams a day |
Cautions and interactions
- It may cause mild insomnia or stomach upset.
- It may interact with warfarin and insulin.
Quick answers
- Is 200 mg of CoQ10 too much?
- 200 milligrams of coenzyme Q10 is in the range studies have usually used, 90 to 390 milligrams a day. It may cause mild insomnia or stomach upset.
- 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
Type any amount of a vitamin, mineral or supplement, or a whole routine, and see how it compares with the adult limits. Open Supplement Check, free, no sign-up.
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?”