Kampo Medicine + Eribulin Mesylate
Eribulin Mesylate brand name: Halaven.
We found no known interaction between Kampo Medicine and Eribulin Mesylate in our sources. Absence of a documented interaction is not the same as proven safety, and does not guarantee one does not exist. Do not start, stop, or change a medication or supplement based on this page; confirm with your pharmacist or doctor first.
Kampo Medicine and Eribulin Mesylate
We checked these two against our interaction database. Here is what we found.
No Known Interaction Found
We did not find a documented interaction between Eribulin Mesylate and Kampo Medicine in our sources. This does not guarantee that the combination is completely free of risk — there is often limited research on supplements and herbal products, especially around drug interactions.
Worth understanding: our licensed dataset holds no drug-interaction record for Kampo Medicine at all — not against Eribulin Mesylate, and not against any other medication we track. This verdict therefore rests on the absence of any recorded data, not on research that looked at this combination and found nothing. We cannot rule an interaction out.
If you decide to take both, the practical routine is simple: add one new thing at a time and note the date you started it. If the combination is going to disagree with you, it usually shows in the first days to a couple of weeks — and a start date turns “I’ve been feeling off” into something a pharmacist can actually work with. Do not stop a prescribed medicine on your own.
Always talk with your pharmacist or doctor before making changes to your medications or supplements, particularly if you take several medications or have an ongoing health condition.
Kampo Medicine safety at a glance
Safety guidance is general; always confirm with your pharmacist or doctor for your situation.
See Every Supplement That Interacts With Eribulin Mesylate
This page covers Kampo Medicine only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Eribulin Mesylate page lists 13 supplements it has a documented interaction with, worst first, each one explained.
The most serious there right now: American Hellebore (major), Arsenic (major), Cesium (major), Ephedra (major) and Grapefruit (major).
By severity: 6 major · 7 moderate.
From our pharmacist’s overview on the Eribulin Mesylate page
“Eribulin mesylate (Halaven) is an infused chemotherapy, used most often for advanced breast cancer, and one of its known effects is stretching the heart's QT interval, the recovery pause between beats on an ECG. All 13 supplements on this page can do the same thing, so pairing any of them with eribulin stacks that strain and raises the…”
Reviewed by 2 · Jul 18, 2026
Where Kampo Medicine and Eribulin Mesylate Sit Against Everything Else
Out of every supplement and medication people look up on HelloPharmacist, here is where these two land this week — and which way each has been moving.
#1,422 of 1,452 supplements looked up here in the last 7 days
#2,665 of 2,830 medications looked up here in the last 7 days
Position among everything looked up on this site, not a measure of how commonly either one is used or how important it is. A supplement can climb this list because of a news story. It counts every request to the page, automated ones included, and nothing here identifies anyone.
Where does our data come from?
- Source: the Natural Medicines (TRC Healthcare) clinical database — the evidence-graded professional reference for herb & supplement interactions. Kampo Medicine is not yet covered by that licensed database, so its write-up cites publicly available medical sources directly (see the references below).
- Citation library: 103,510 references behind our interaction content, 65,311 of them resolved to verified PubMed/DOI sources. See every Kampo Medicine reference on this page ↓
- Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The Kampo Medicine and Eribulin Mesylate records this page draws on were last updated June 20, 2026.
- What “no known interaction” means: no documented interaction in the sources above — not a guarantee of safety. Supplements are studied far less than prescription drugs, so we say exactly what the evidence supports, and nothing more.
About Kampo Medicine
What is Kampo Medicine?
- Digestive complaints
- Cold and flu symptoms
- Menopausal symptoms
- Fatigue and general weakness
- Constipation
- Pain and inflammation
Kampo is a traditional Japanese system of herbal medicine that uses standardized multi-herb formulas, many of which are prescribed by doctors in Japan. Some formulas have modest supportive evidence for certain conditions, but quality and strength of research vary widely. Because Kampo products combine many ingredients, talk with a pharmacist or doctor before using them, especially if you take other medicines or have a health condition.
Roots, rhizomes, bark, leaves, flowers, fruits, seeds, and minerals depending on the formula · Granules, powders, decoctions (teas), tablets, and capsules
An interaction check asks whether these two react with each other — it does not ask whether Kampo Medicine is a good idea for someone in your situation. Here is what our Kampo Medicine record says about it on its own.
Kampo Medicine: dosing
There is no single standard dose for "Kampo medicine" because it is a whole system of many different formulas. Each formula has its own typical dosing, which can also depend on the person and the condition being treated.In Japan, doses are often based on standardized extract granules and prescribed by a clinician.
From our Kampo Medicine monograph — the full record covers uses, side effects and every documented interaction.
About Eribulin Injection
What Is Eribulin Injection Used For?
Brand name: Halaven
Eribulin mesylate injection (brand name Halaven) is used to treat metastatic breast cancer in patients who have already received at least two prior chemotherapy regimens for metastatic disease, including an anthracycline and a taxane. It is also approved for unresectable or metastatic liposarcoma in patients who have received a prior anthracycline-containing regimen.
Both uses are for advanced cancers that have already been treated with other therapies. This is not a first-line treatment — it is used when the cancer has progressed despite earlier chemotherapy.
Most-Reported Side Effects for Eribulin Mesylate
From FAERS, the FDA’s public side-effect reporting system (3,719 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.
Other Drugs & Kampo Medicine
Browse every other medication we’ve checked against Kampo Medicine — both the ones with a known interaction and the ones without. Select any drug for the full detail.
No drugs match “”.
No interaction 2,829 drugs checked — show the list
We also checked Kampo Medicine against these medications and found no known interaction in our sources. Open any page to confirm.
- Apixaban ›
- Levothyroxine ›
- Amlodipine ›
- Warfarin ›
- Methylphenidate ›
- Sertraline ›
- Losartan Potassium ›
- Testosterone ›
- Ivermectin ›
- Metoprolol ›
- Aspirin ›
- Rivaroxaban ›
- Acetaminophen ›
- Rosuvastatin ›
- Abemaciclib ›
- Escitalopram ›
- Clopidogrel ›
- Atorvastatin ›
- Tadalafil ›
- Docusate ›
- Tirzepatide ›
- Ibuprofen ›
- Hydroxyurea ›
- Valacyclovir ›
- Methamphetamine ›
- Warfarin Sodium ›
- Semaglutide ›
- Sumatriptan ›
- Prednisone ›
- Lisdexamfetamine ›
- Propranolol ›
- Metformin ›
- Amoxicillin ›
- Lisinopril ›
- Amitriptyline ›
- Bupropion ›
- Methotrexate ›
- Bendamustine ›
- Isotretinoin ›
- Amphetamine ›
- Amlodipine Besylate ›
- Acyclovir ›
- Doxycycline ›
- Fluoxetine ›
- Pregabalin ›
- Lamotrigine ›
- Azithromycin ›
- Gabapentin ›
- Acetaminophen, Codeine ›
- Dextroamphetamine ›
- Clonazepam ›
- Quetiapine ›
- Methylene Blue ›
- Omeprazole ›
- Letrozole ›
- Naproxen ›
- Duloxetine ›
- Buspirone ›
- Citalopram ›
- Ciprofloxacin ›
Showing the 60 most looked-up of 2,829 medications checked with no known interaction — see the full Kampo Medicine list.
Kampo Medicine References
The 4 sources that drive our Kampo Medicine monograph — publicly available pages from reputable medical and government organizations. Every link was verified to work before publishing. Kampo Medicine is not covered by the licensed Natural Medicines interaction database, so its page cites these public sources directly.
- Herbs at a Glance — NIH NCCIH Source
- Using Dietary Supplements Wisely — NIH NCCIH Source
- Herbal Medicine — MedlinePlus Source
- About Herbs, Botanicals & Other Products — Memorial Sloan Kettering Cancer Center Source
Medication overviews come from MedlinePlus (NIH); supplement label data from the NIH Dietary Supplement Label Database. Content is written and reviewed by licensed HelloPharmacist pharmacists — see our data sources and editorial standards.
Taking Kampo Medicine and Eribulin Mesylate Together: Common Questions
Is it safe to take Kampo Medicine with Eribulin Mesylate?
Does Eribulin Mesylate interact with any supplements?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
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Still Have a Question About Eribulin Mesylate and Kampo Medicine?
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This information is for education only and is not a substitute for professional medical advice. Always check with your pharmacist or doctor before starting, stopping, or combining supplements and medications.