Arum + Belumosudil Mesylate
Belumosudil Mesylate brand name: Rezurock.
We found no known interaction between Arum and Belumosudil 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. Additionally, although there is no interaction, the label for Belumosudil Mesylate states a food rule worth keeping to, and 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.
Arum and Belumosudil 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 Belumosudil Mesylate and Arum 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.
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.
Arum 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.
Why No Interaction Is Listed for Belumosudil Mesylate
Interactions in our licensed database are recorded against drug classes, not just single drug names. Belumosudil Mesylate is filed under 2 classifications — cytochrome p450 3a4 (cyp3a4) substrates, oral drugs. Arum has documented interactions with 1 drug class — the most serious being iron (minor) — and none of Belumosudil Mesylate’s classifications are among them.
Classification data comes from our licensed Natural Medicines dataset. A medication can belong to classes beyond those recorded there, so this describes how the check was run — it is not a safety guarantee.
Arum Does Interact With Other Medications
Arum has 1 minor known drug interaction in our database — Belumosudil Mesylate isn’t one of them. If you take anything else, check it against the full list below.
Check Another of Your Medications Against Arum
We haven’t checked that one against Arum yet — ask our pharmacists directly.
Covers the 2,830 medications we’ve checked against Arum. Pick one to open its full report.
Arum in Pregnancy & Breastfeeding
When used orally because of its toxicity; 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
Some Belumosudil Mesylate Products Have a Food Rule — Arum Should Not Break It
At least one FDA label for a product containing Belumosudil Mesylate says to take it with food. If you take Arum on an empty stomach out of habit, keep them separate — and take Belumosudil Mesylate with a meal where the label says to.
This may not be true of your version. Food instructions belong to the product, not the ingredient: two Belumosudil Mesylate products can carry different directions, and extended-release forms often differ from immediate-release ones. The label we read is quoted below — check the directions on your own box or bottle, or ask your pharmacist, for how to take the exact product you were given.
2 DOSAGE AND ADMINISTRATION Recommended Dosage : 200 mg taken orally once daily with food.
From the Dosage and Administration section of the FDA label we read for Belumosudil Mesylate — where that label names a specific product, the instruction is that product's. Read the label on DailyMed ›
A food rule is not an interaction — it is about how much of the medicine you absorb. The directions that came with your own product, and your pharmacist, outrank anything on this page.
See Every Supplement That Interacts With Belumosudil Mesylate
This page covers Arum only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Belumosudil Mesylate page lists 138 supplements it has a documented interaction with, worst first, each one explained.
The most serious there right now: Activated Charcoal (major), Grapefruit (major), St. John's Wort (major), Acacia Rigidula (moderate) and Adrafinil (moderate).
By severity: 3 major · 94 moderate · 41 minor.
From our pharmacist’s overview on the Belumosudil Mesylate page
“Most people taking belumosudil (Rezurock) are managing chronic graft-versus-host disease after a stem cell transplant, and many reach for supplements hoping for extra support. This list warrants real vigilance.”
Reviewed by 2 · Jul 18, 2026
Where Arum and Belumosudil 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.
#910 of 1,452 supplements looked up here in the last 7 days
#746 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 Arum reference on this page ↓
- Freshness: we automatically re-check this combination every week — this pair was last verified September 13, 2026. The Arum and Belumosudil Mesylate 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 Arum
What is Arum?
- Coughs and chest congestion
- Sore throat
- Promoting sweating (diaphoretic)
- Skin and wart remedies (topical folk use)
- Digestive complaints
Arum is a traditional European plant whose root has been used in folk medicine, but there is essentially no reliable human research to support any health benefit. The raw plant is toxic and irritating because of calcium oxalate crystals, so it should not be eaten or used casually. We do not recommend using Arum as a supplement, especially during pregnancy or breastfeeding.
Arum maculatum · Araceae · Root (tuber), and sometimes leaves · Dried root preparations, tinctures, and traditional folk remedies
An interaction check asks whether these two react with each other — it does not ask whether Arum is a good idea for someone in your situation. Here is what our Arum record says about it on its own.
Arum: dosing
There is no established or standardized safe dose for Arum. Because the plant is toxic and human research is lacking, no trustworthy dosing guidelines exist.We do not recommend taking Arum. If you encounter a product that contains it, do not use it without first checking with a pharmacist or doctor, and never prepare or eat the raw plant yourself.
From our Arum monograph — the full record covers uses, side effects and every documented interaction.
About Belumosudil
What Is Belumosudil Used For?
Brand name: Rezurock
Rezurock (belumosudil) is used to treat chronic graft-versus-host disease (chronic GVHD) — a serious immune condition that can occur after a stem cell or bone marrow transplant, where the donor's immune cells attack the recipient's body. It is specifically for patients aged 12 and older whose chronic GVHD has not responded to at least two prior systemic (whole-body) treatments.
Other Drugs & Arum
Browse every other medication we’ve checked against Arum — both the ones with a known interaction and the ones without. Select any drug for the full detail.
No drugs match “”.
1 interaction
No interaction 2,828 drugs checked — show the list
We also checked Arum against these medications and found no known interaction in our sources. Open any page to confirm.
- Apixaban ›
- Levothyroxine ›
- Amlodipine ›
- Methylphenidate ›
- Warfarin ›
- Sertraline ›
- Testosterone ›
- Losartan Potassium ›
- Ivermectin ›
- Metoprolol ›
- Rivaroxaban ›
- Aspirin ›
- Rosuvastatin ›
- Acetaminophen ›
- Escitalopram ›
- Abemaciclib ›
- Clopidogrel ›
- Tadalafil ›
- Atorvastatin ›
- Docusate ›
- Tirzepatide ›
- Valacyclovir ›
- Ibuprofen ›
- Methamphetamine ›
- Hydroxyurea ›
- Warfarin Sodium ›
- Semaglutide ›
- Sumatriptan ›
- Prednisone ›
- Propranolol ›
- Lisdexamfetamine ›
- Metformin ›
- Amoxicillin ›
- Lisinopril ›
- Bupropion ›
- Amitriptyline ›
- Methotrexate ›
- Bendamustine ›
- Acyclovir ›
- Doxycycline ›
- Amphetamine ›
- Fluoxetine ›
- Isotretinoin ›
- Lamotrigine ›
- Pregabalin ›
- Azithromycin ›
- Acetaminophen, Codeine ›
- Gabapentin ›
- Amlodipine Besylate ›
- Dextroamphetamine ›
- Clonazepam ›
- Methylene Blue ›
- Omeprazole ›
- Quetiapine ›
- Letrozole ›
- Duloxetine ›
- Naproxen ›
- Buspirone ›
- Citalopram ›
- Ciprofloxacin ›
Showing the 60 most looked-up of 2,828 medications checked with no known interaction — see the full Arum list.
Arum References
The 3 references that drive our Arum 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.
- Gruenwald J, Brendler T, Jaenicke C. PDR for Herbal Medicines. 1st ed. Montvale, NJ: Medical Economics Company, Inc., 1998.
- Mrvos, R., Dean, B. S., and Krenzelok, E. P. Philodendron/dieffenbachia ingestions: are they a problem? J Toxicol Clin Toxicol 1991;29(4):485-491. PubMed
- Prakash Raju KNJ, Goel K, Anandhi D, Pandit VR, Surendar R, Sasikumar M. Wild tuber poisoning: Arum maculatum - A rare case report. Int J Crit Illn Inj Sci. 2018;8(2):111-114. 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 Arum and Belumosudil Mesylate Together: Common Questions
Is it safe to take Arum with Belumosudil Mesylate?
Do Arum and Belumosudil Mesylate have any of the same side effects?
Should I take Arum and Belumosudil Mesylate at the same time of day?
How was the Arum and Belumosudil Mesylate combination checked?
Does Arum interact with any other medications?
Does Belumosudil Mesylate interact with any supplements?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Keep Exploring
Still Have a Question About Belumosudil Mesylate and Arum?
Our pharmacists answer your medication & supplement questions — free.
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.