Medicine safety
CoQ10 and Warfarin: A Documented Interaction
CoQ10 and warfarin interact. Mayo Clinic says coenzyme Q10 might make warfarin not work as well, which could raise the risk of a blood clot. Flow Nerves lists coenzyme Q10 among six names and prints no amount, so anyone on warfarin should ask a doctor or pharmacist before taking it.
Written by the Flow Nerves label deskUpdated · 4 min read
The interaction
Does CoQ10 interact with warfarin?
Yes, three sources say so. Warfarin is a blood thinner. Mayo Clinic says coenzyme Q10 (CoQ10) might make warfarin (Jantoven) not work as well, and that this could raise the risk of a blood clot (Mayo Clinic, Coenzyme Q10).
Memorial Sloan Kettering says CoQ10 is structurally similar to vitamin K and may work against warfarin (MSK, Coenzyme Q10). The National Cancer Institute says it may change how the body uses warfarin and insulin (NCI, Coenzyme Q10).
Keep taking warfarin exactly as prescribed. Never stop or change it because of a supplement.
Side by side
What does each source say about CoQ10 and warfarin?
The sources agree on the direction of concern, with small differences in wording. None tested Flow Nerves.
| Source | What it says |
|---|---|
| Mayo Clinic (Mayo Clinic, Coenzyme Q10) | Might make warfarin work less well; risk of a clot |
| Memorial Sloan Kettering (MSK, Coenzyme Q10) | Similar to vitamin K; may work against warfarin; bleeding risk also reported |
| National Cancer Institute (NCI, Coenzyme Q10) | May change how the body uses warfarin and insulin |
Other blood thinners, such as clopidogrel, apixaban and rivaroxaban, are not covered by these three pages. Ask about each one by name.
On this label
Does Flow Nerves contain CoQ10?
Yes. The brief and the seller's page name coenzyme Q10 (ubiquinone) as one of six ingredients. No milligram amount is printed for it in the material we have.
Two other Flow Nerves names also have blood thinner notes. MSK says turmeric may raise bleeding risk and L-carnitine may add to warfarin (MSK, Turmeric) (MSK, Carnitine). So the whole list matters, not only CoQ10.
That is why we do not call any capsule safe or unsafe for you. The label cannot settle it, and your doctor knows your clotting results.
What to do
What should you tell your doctor about CoQ10 and warfarin?
Tell them the product name, the six ingredients and that no amounts are printed. Then ask whether your clotting tests need to change.
Watch for warning signs and know when to act. This panel separates 911 from a doctor visit.
- Sudden weakness or numbness on one side, trouble speaking, chest pain, trouble breathingThese can signal an emergency. Do not wait.Call 911
- Swelling of the lips, face or throat, hives, or trouble breathing after a supplementAllergic reactions to butcher's broom can be serious, WebMD says. Stop and call 911.Call 911
- Confusion, shaking, sweating or a very fast heartbeat if you take diabetes medicineThese can be signs of low blood sugar, and very low blood sugar needs treatment right away, NIDDK says.Call 911
- New tingling, weakness or pain in your hands or feetMayo Clinic says to seek medical care right away. Early diagnosis gives the best chance of managing symptoms.See a doctor
- A foot sore that is infected or will not healCDC lists it among the reasons to call your doctor if you have diabetes.See a doctor
- Falls, lost coordination or muscle weaknessMayo Clinic lists them as symptoms to have checked.See a doctor
- Burning, tingling or pain that disrupts your day or your sleepCDC says to call your doctor, and to keep notes on the symptoms to share.See a doctor
- Changes in digestion, urination or sexual function, dizziness or faintingCDC lists these with nerve damage in people with diabetes.See a doctor
Signs from (Mayo Clinic, Peripheral neuropathy) and (CDC, Diabetes and nerve damage). This list is not complete, and a supplement is never a reason to wait.
FAQ
Flow Nerves questions people ask
Can I take CoQ10 while on warfarin?
Only after your doctor or pharmacist agrees. Mayo Clinic says CoQ10 might make warfarin work less well (Mayo Clinic, Coenzyme Q10). Do not start it on your own.
Why does CoQ10 affect warfarin?
MSK says CoQ10 is structurally similar to vitamin K, which warfarin works against (MSK, Coenzyme Q10). That is why the pair needs a check.
Does Flow Nerves show how much CoQ10 it holds?
No amount is printed in the material we have. Ask the order desk, and check your bottle's Supplement Facts panel.
Should I stop warfarin if I took CoQ10?
No. Call your doctor or pharmacist, keep taking prescribed medicine, and say what you took and for how long.
Who wrote this
Written and reviewed by
Pages built from the label, the brand panels and linked NIH, FDA, CDC, FTC and peer-reviewed sources.
Last updated . Read our editorial standards and how we check reviews. This website is the information site for a U.S. stocking partner for Flow Nerves. It is not the manufacturer or a distributor named on the label. We earn money when you buy through our order links.
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Check your medicines first with the Switchboard, especially diabetes medicine, blood thinners and blood pressure medicine, and see a doctor about new numbness or tingling, then pick a pack. On the seller's count one bottle is 30 days; 3 bottles cover 90 days and 6 cover 180.
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