Arrowroot + Vismodegib
Vismodegib brand name: Erivedge.
We found no known interaction between Arrowroot and Vismodegib 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. Additionally, although there is no interaction, the two are separately associated with some of the same side effects, which would make a new symptom harder to attribute to one or the other.
Arrowroot and Vismodegib
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 Vismodegib and Arrowroot 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 Arrowroot at all — not against Vismodegib, 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.
Arrowroot safety at a glance
Pregnancy & breastfeeding ratings are from Natural Medicines (Therapeutic Research Center) — the full detail is in the Special populations card below. Safety guidance is general; always confirm with your pharmacist or doctor for your situation.
Arrowroot in Pregnancy & Breastfeeding
When used in amounts found in foods. There is insufficient reliable information available about the safety of larger amounts used during pregnancy and lactation; avoid using.
DISCLAIMER: This tool is intended for informational purposes only, and should not be interpreted as specific medical advice. Patients should consult with a qualified healthcare provider before making decisions about therapies and/or health conditions.© 2026 Therapeutic Research Center
See Every Supplement That Interacts With Vismodegib
This page covers Arrowroot only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Vismodegib page lists 57 supplements it has a documented interaction with, worst first, each one explained.
The most serious there right now: Activated Charcoal (major), St. John's Wort (major), Bitter Melon (moderate), Black Pepper (moderate) and Bulbine Natalensis (moderate).
By severity: 2 major · 38 moderate · 17 minor.
From our pharmacist’s overview on the Vismodegib page
“St. John's wort can quietly undercut vismodegib (Erivedge), the pill for advanced basal cell carcinoma, by speeding up the gut pump that clears the drug from the body, and a cancer treatment that silently loses potency is the worst kind of interaction.”
Reviewed by 2 · Jul 18, 2026
Taking Arrowroot as Part of a Dietary Supplement Product? Check It for Interactions
We hold 28 real supplement products containing Arrowroot, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Arrowroot. Even though Arrowroot itself has no known interaction with Vismodegib, another ingredient on your label might. Find your product and we’ll check every ingredient on its label:
Where Arrowroot and Vismodegib 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.
#659 of 1,452 supplements looked up here in the last 7 days
#344 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.
- Citation library: 103,510 references behind our interaction content, 65,311 of them resolved to verified PubMed/DOI sources. See every Arrowroot reference on this page ↓
- Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The Arrowroot and Vismodegib records this page draws on were last updated July 10, 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 Arrowroot
What is Arrowroot?
- Diarrhea
- Irritable bowel syndrome (IBS) symptoms
- Digestive upset
- Gluten-free thickener/food ingredient
- Soothing skin and cosmetics
Arrowroot is a starch made from the roots of Maranta arundinacea and is mainly used as a gentle, easy-to-digest thickening agent in food. Some people use it for diarrhea and digestive discomfort, but solid human evidence for these health benefits is limited. As a food it is generally well tolerated, but talk with your pharmacist or doctor before using it to treat a medical condition.
Maranta arundinacea · Marantaceae · Rhizomes (roots), processed into starch · Powder (starch), flour, capsules, food thickener, cosmetic ingredient
An interaction check asks whether these two react with each other — it does not ask whether Arrowroot is a good idea for someone in your situation. Here is what our Arrowroot record says about it on its own.
Arrowroot: dosing
There is no official or standardized medicinal dose for arrowroot. In cooking, it is used in small amounts as a thickener, and there is no established "therapeutic" dose proven to treat any condition.If you are using a packaged arrowroot product or supplement, follow the directions on the label.
From our Arrowroot monograph — the full record covers uses, side effects and every documented interaction.
About Vismodegib
What Is Vismodegib Used For?
Brand name: Erivedge
Erivedge (vismodegib) is used to treat adults with basal cell carcinoma — the most common type of skin cancer — in two specific situations: when the cancer has spread to other parts of the body (metastatic basal cell carcinoma), or when it is locally advanced and has returned after surgery, or when surgery and radiation are not options.
It is not approved for use in children.
Most-Reported Side Effects for Vismodegib
From FAERS, the FDA’s public side-effect reporting system (8,850 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.
Other Drugs & Arrowroot
Browse every other medication we’ve checked against Arrowroot — 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 Arrowroot 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 ›
- Abemaciclib ›
- Aspirin ›
- Acetaminophen ›
- Rosuvastatin ›
- Rivaroxaban ›
- Escitalopram ›
- Clopidogrel ›
- Atorvastatin ›
- Tadalafil ›
- Docusate ›
- Tirzepatide ›
- Ibuprofen ›
- Methamphetamine ›
- Hydroxyurea ›
- Warfarin Sodium ›
- Valacyclovir ›
- Sumatriptan ›
- Semaglutide ›
- Prednisone ›
- Lisdexamfetamine ›
- Propranolol ›
- Metformin ›
- Amitriptyline ›
- Lisinopril ›
- Amoxicillin ›
- Isotretinoin ›
- Methotrexate ›
- Amlodipine Besylate ›
- Bendamustine ›
- Bupropion ›
- Amphetamine ›
- Fluoxetine ›
- Doxycycline ›
- Acyclovir ›
- Azithromycin ›
- Lamotrigine ›
- Pregabalin ›
- Dextroamphetamine ›
- Gabapentin ›
- Acetaminophen, Codeine ›
- Quetiapine ›
- Clonazepam ›
- Levothyroxine, Liothyronine ›
- Naproxen ›
- Omeprazole ›
- Letrozole ›
- Methylene Blue ›
- Duloxetine ›
- Buspirone ›
- Citalopram ›
Showing the 60 most looked-up of 2,829 medications checked with no known interaction — see the full Arrowroot list.
Arrowroot References
The 2 references that drive our Arrowroot monograph and interaction data, from the evidence-graded Natural Medicines (TRC Healthcare) database. Citations with a link open the study on PubMed or the publisher’s site.
- McGuffin M, Hobbs C, Upton R, Goldberg A, eds. American Herbal Products Association's Botanical Safety Handbook. Boca Raton, FL: CRC Press, LLC 1997.
- Cooke, C., Carr, I., Abrams, K., and Mayberry, J. Arrowroot as a treatment for diarrhoea in irritable bowel syndrome patients: a pilot study. Arq Gastroenterol. 2000;37(1):20-24. PubMed
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 Arrowroot and Vismodegib Together: Common Questions
Is it safe to take Arrowroot with Vismodegib?
Do Arrowroot and Vismodegib have any of the same side effects?
Does Vismodegib interact with any supplements?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
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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.