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Can You Take Brain Supplements With Blood Thinners?
Brain supplements and blood thinners can interact, so ask your prescriber or pharmacist before combining them. Coenzyme Q10 may weaken warfarin, and ginkgo may raise bleeding risk. Keep taking your blood thinner exactly as prescribed, and never change a dose because of a supplement.
Written by the Synaptril label deskUpdated · 4 min read

Which brain supplement ingredients affect blood thinners?
A few brain supplement ingredients can change how a blood thinner behaves, and the table shows what our sources say. Keep taking your blood thinner as prescribed.
| Ingredient | What our source says |
|---|---|
| Coenzyme Q10 (in Synaptril) | May weaken warfarin (Linus Pauling Institute, Coenzyme Q10) |
| Ginkgo (not in Synaptril) | May raise bleeding risk with warfarin-type drugs (NCCIH, Ginkgo) |
| Turmeric extract (in Synaptril) | No drug interactions named; ask your pharmacist (NCCIH, Turmeric) |
| Fish oil, vitamin E | Not covered by our sources; ask |
Which Synaptril ingredient matters most with blood thinners?
Coenzyme Q10 matters most, because it has been reported to reduce warfarin's effect, and people on warfarin should have their INR checked (Linus Pauling Institute, Coenzyme Q10).
The label lists CoQ10 last in the blend, so by our blend math a capsule holds at most about 35 mg. That is small, but small is not none. The label itself says to consult a physician if you take a medication. It does not name warfarin, so the label alone cannot clear you.

How can you check your own medicine?
Pick your type of medicine below to see which ingredient matters. It is a prompt for a pharmacist, not a verdict. Never stop or change a prescribed dose on your own.
Blood thinners (warfarin)
- Coenzyme Q10Reported to reduce warfarin's effect; your INR may need checking. (Linus Pauling Institute, Coenzyme Q10)
Diabetes medicines
- Alpha lipoic acidMay lower blood sugar further; check your glucose more often. (Linus Pauling Institute, Lipoic Acid)
Antibiotics (tetracyclines, quinolones)
- MagnesiumBinds these antibiotics; take them at least 2 hours before or 4-6 hours after. (NIH ODS, Magnesium)
Osteoporosis drugs (bisphosphonates)
- MagnesiumCan reduce absorption; separate by at least 2 hours. (NIH ODS, Magnesium)
Water pills and acid reducers (PPIs)
- MagnesiumThese drugs change magnesium levels; your doctor may check them. (NIH ODS, Magnesium)
Seizure medicines
- L-carnitineValproic acid and some other seizure drugs lower carnitine levels; ask your neurologist. (NIH ODS, Carnitine)
Liver problems or many medicines
- TurmericRare liver injury, mostly with high-absorption curcumin; stop and call a doctor for dark urine or yellow skin. (NIH LiverTox, Turmeric)
A starting list for a talk with your pharmacist, not a full interaction check. Keep taking prescribed medicine; never stop or change a dose because of a supplement.

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See packsWhat should you ask your doctor or pharmacist?
Ask whether each ingredient on the label fits your blood thinner, and whether you need extra blood tests.
- Bring the bottle and its Supplement Facts.
- Ask whether you need extra blood tests after you start.
- Tell every provider about every supplement (NCCIH, Using Dietary Supplements Wisely).
More in supplements and medicines, turmeric and side effects.
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FAQ01
Synaptril questions people ask
Does ginkgo raise bleeding risk with warfarin?
It may. NCCIH says ginkgo may increase bleeding risk with anticoagulants such as warfarin. Ginkgo is not in Synaptril, but it appears in many other memory products.
Who checks warfarin levels after a new supplement?
Your prescriber does. Linus Pauling Institute advises people on warfarin to consult their prescriber about CoQ10 and have INR checked.
Should I tell my surgeon about brain supplements?
Yes. NCCIH notes supplements can be risky before surgery, so list every product you take, with doses, at your pre-surgery visit.
Who wrote this02
Written and reviewed by
Pages built from the label, the sales page and linked NIH, FDA, CDC, FTC and peer-reviewed sources.
Last updated . Learn about our editorial standards and how we check reviews. This website is run by a U.S. retail partner of Synaptril, not by the manufacturer or the distributor. We make money when you buy through our order links.
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