Can you take CoQ10 (Ubiquinol) and Warfarin together?
Yes, with care — this combination needs a precaution.
CoQ10 (Ubiquinol) and Warfarin can be taken together, but the combination needs a precaution.
Why these two interactSources for why these two interact: Jumps to this entry in the sources and references list at the end of the page.
CoQ10 is structurally similar to vitamin K and may reduce warfarin's effect in some people.
What to do about itSources for what to do about it: Jumps to this entry in the sources and references list at the end of the page.
Flag to your provider; warfarin is monitored by blood tests.
TimingSources for timing: Jumps to this entry in the sources and references list at the end of the page.
No fixed separation window applies here. Keep the timing consistent day to day so any effect is easy to spot.
The two items in this pair
CoQ10 (Ubiquinol)
- Category:
- supplement
- Typical timing:
- with_meal
- With food:
- with_food
- Half-life:
- 33 h
Warfarin
- Category:
- medication
- Typical timing:
- evening
- With food:
- either
- Half-life:
- 20 h
Check your whole routine, not just this pair
One pair rarely tells the whole story. DoseRoutine checks every combination in your stack at once — supplements, TRT, peptides, GLP-1s and prescriptions — and schedules the doses so timing conflicts like this one are handled automatically.
Frequently asked
Sources cited on this page
Specific documents referenced by the numbered markers above.
- Coumadin (warfarin sodium) — FDA prescribing information(opens in a new tab)DailyMed — U.S. National Library of Medicine · dailymed.nlm.nih.gov/dailymed/drugInfo.cfm
- The effect of low-dose oral vitamin K supplementation on INR stability in patients receiving warfarin(opens in a new tab)PubMed — National Library of Medicine · pubmed.ncbi.nlm.nih.gov/27346552/
- Vitamin K — Fact Sheet for Health Professionals(opens in a new tab)NIH Office of Dietary Supplements · ods.od.nih.gov/factsheets/VitaminK-HealthProfessional/
Verify at
This assessment is mechanism-based. These publisher search links let you check it against the current evidence — they are not citations, so they are not numbered.
- PubMed: CoQ10 (Ubiquinol) + Warfarin(publisher search, opens in a new tab)National Library of Medicine · publisher search
- DailyMed label: CoQ10 (Ubiquinol)(publisher search, opens in a new tab)U.S. National Library of Medicine · publisher search
- DailyMed label: Warfarin(publisher search, opens in a new tab)U.S. National Library of Medicine · publisher search
- Cochrane Library(publisher search, opens in a new tab)Cochrane · publisher search
Related combinations
- Atorvastatin and CoQ10 (Ubiquinol)Complementary
- Bromelain and WarfarinCaution
- CoQ10 (Ubiquinol) and LovastatinComplementary
- CoQ10 (Ubiquinol) and PQQComplementary
- CoQ10 (Ubiquinol) and PravastatinComplementary
- CoQ10 (Ubiquinol) and RosuvastatinComplementary
- CoQ10 (Ubiquinol) and SimvastatinComplementary
- Curcumin and WarfarinCaution
Educational information only, not medical advice. DoseRoutine does not diagnose or treat. Talk to your prescriber before starting, stopping or combining anything — especially if you take prescription medication or are pregnant or breastfeeding.