Drug & supplement interaction

Canaigre + Melphalan

Melphalan brand names: Alkeran, Hepzato.

No Known Interaction
Medically reviewed by · Updated June 2026 · Pair last verified Sep 20, 2026
The bottom line No known interaction

We found no known interaction between Canaigre and Melphalan 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.

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Interaction report

Canaigre and Melphalan

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 Melphalan and Canaigre 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 Canaigre at all — not against Melphalan, 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.

Canaigre safety at a glance

Canaigre overall Use caution Limited safety data and high tannin content mean it should be used cautiously, if at all.
Pregnancy Avoid Not enough safety information; avoid use during pregnancy.
Breastfeeding Avoid Not enough safety information; avoid use while breastfeeding.

Safety guidance is general; always confirm with your pharmacist or doctor for your situation.

Still wondering about combining Melphalan and Canaigre? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
What to actually watch for

What Melphalan’s Own FDA Label Lists

This is not an interaction — none of it involves Canaigre. These are the most notable effects listed in the ADVERSE REACTIONS section of Melphalan’s own FDA label, for the medication by itself. Knowing the drug’s own list makes it easier to work out the likely cause if something new turns up while you take both. 7 of them are worth acting on rather than waiting out — marked below.

  • Low potassium Worth acting on
  • A low platelet count Worth acting on
  • Kidney problems Worth acting on
  • Anemia Worth acting on
  • A low white blood cell count Worth acting on
  • Liver problems Worth acting on
  • An allergic reaction Worth acting on
  • A change in taste
  • Mouth irritation or sores
  • Reduced appetite

Showing the 10 most notable of 20 label-listed effects — ranked by how unusual each one is across medicines generally, with serious effects weighted up.

From the ADVERSE REACTIONS section of the FDA label for Melphalan. Read the label on DailyMed › Canaigre’s licensed record lists no adverse effects our clinical vocabulary could match, so there is no Canaigre side to compare — that is a limit of the record, not a statement that Canaigre has no side effects.

Everything else you take

See Every Supplement That Interacts With Melphalan

This page covers Canaigre only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Melphalan page lists 25 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), Acerola (moderate), Alpha-lipoic Acid (moderate), Coenzyme Q10 (moderate) and Coffee Charcoal (moderate).

By severity: 1 major · 14 moderate · 10 minor.

From our pharmacist’s overview on the Melphalan page

“Melphalan is chemotherapy, most often given for multiple myeloma, and anything that weakens it can cost real ground against the cancer, so treat this list with genuine care. The one major entry is activated charcoal, which soaks up drugs in the gut and can lower melphalan exposure even when the drug is given by IV.”

Reviewed by 2 · Jul 18, 2026

Open the Melphalan interaction page

One more smart check

Taking Canaigre as Part of a Dietary Supplement Product? Check It for Interactions

We hold 2 real supplement products containing Canaigre, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Canaigre. Even though Canaigre itself has no known interaction with Melphalan, another ingredient on your label might. Find your product and we’ll check every ingredient on its label:

How much people look this up

Where Canaigre and Melphalan 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.

Supplement Canaigre
Steady interest

#1,139 of 1,452 supplements looked up here in the last 7 days

29 days ago today
Medication Melphalan
Top half

#845 of 2,830 medications looked up here in the last 7 days

29 days ago today

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. Canaigre 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 Canaigre reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The Canaigre and Melphalan records this page draws on were last updated June 22, 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.
Data structure & sourcing designed and verified by .
Supplement

About Canaigre

What is Canaigre?

  • Sore throat and mouth irritation
  • Skin wounds and inflammation
  • Digestive complaints
  • Source of tannins (astringent)
  • Marketed as a 'wild red American ginseng'

Canaigre (Rumex hymenosepalus) is a desert plant whose tannin-rich root has been used traditionally as an astringent for sore throats, skin problems, and digestive complaints. There is very little human research to support any of these uses, and the root naturally contains tannins and may contain compounds of safety concern, so it is best approached with caution and under professional guidance.

Rumex hymenosepalus · Polygonaceae · Root (tuber) · Capsules, powder, dried root, topical preparations

An interaction check asks whether these two react with each other — it does not ask whether Canaigre is a good idea for someone in your situation. Here is what our Canaigre record says about it on its own.

Canaigre: dosing

There is no established or standardized dose for canaigre. Because it has not been studied in proper clinical trials, no one can say what amount is both safe and effective.If you choose to use a commercial product, follow the directions on the label and do not take more than recommended.

From our Canaigre monograph — the full record covers uses, side effects and every documented interaction.

Read the full Canaigre monograph & all interactions
Medication

About Melphalan

What Is Melphalan Used For?

Brand names: Alkeran, Hepzato

Melphalan is used to treat multiple myeloma, a cancer of plasma cells in the bone marrow. Different products are approved for different roles in that treatment.

Evomela (intravenous injection) is used as a high-dose conditioning treatment — meaning it prepares the body before a stem cell transplant. Ivra (intravenous injection) is used for palliative treatment of multiple myeloma in patients for whom oral therapy is not appropriate. Oral melphalan (Alkeran tablet) is also used for palliative treatment of multiple myeloma.

See full Melphalan drug information
Keep checking

Other Drugs & Canaigre

Browse every other medication we’ve checked against Canaigre — both the ones with a known interaction and the ones without. Select any drug for the full detail.

0Major
0Moderate
0Minor
2,829No known interaction
2,829 No interaction
No interaction 2,829 drugs checked — show the list

We also checked Canaigre against these medications and found no known interaction in our sources. Open any page to confirm.

Showing the 60 most looked-up of 2,829 medications checked with no known interaction — see the full Canaigre list.

See the full Canaigre interactions page
See every supplement checked against Melphalan, ranked by severity
Evidence & sources

Canaigre References

The 1 sources that drive our Canaigre monograph — publicly available pages from reputable medical and government organizations. Every link was verified to work before publishing. Canaigre is not covered by the licensed Natural Medicines interaction database, so its page cites these public sources directly.

  1. Tannins — MedlinePlus 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.

Pharmacist Counseling Corner

Taking Canaigre and Melphalan Together: Common Questions

Is it safe to take Canaigre with Melphalan?
We do not list a known interaction between Canaigre and Melphalan. That does not guarantee the combination is risk-free, so confirm with your pharmacist or doctor — especially if you take other medications or have a health condition.
Does Melphalan interact with any supplements?
Yes. Melphalan has documented interactions with 25 supplements in our database — Canaigre is not one of them. The Melphalan interaction page linked on this page lists every one, ranked by severity.

Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy

Where next

Keep Exploring

Canaigre monograph Uses, safety profile, and every drug interaction in one place Melphalan drug information The full plain-English guide to this medication Melphalan supplement interactions Every supplement checked against Melphalan, ranked by severity Supplement interaction checker Check any supplement or product against your medications Browse medications A–Z Every drug we’ve checked against herbs & supplements References The 1 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Melphalan and Canaigre?

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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.