Drug & supplement interaction

Chinese Mallow + Ondansetron

Ondansetron brand name: Zofran.

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 Chinese Mallow and Ondansetron 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

Chinese Mallow and Ondansetron

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 Ondansetron and Chinese Mallow 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.

Chinese Mallow safety at a glance

Chinese Mallow overall Use caution Generally regarded as food-like in small culinary amounts, but human safety data for concentrated supplements is limited.
Pregnancy Avoid Safety has not been established and some traditional sources suggest avoiding it; do not use without medical advice.
Breastfeeding Avoid There is not enough safety information, so it is best to avoid it while nursing.

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

Still wondering about combining Ondansetron and Chinese Mallow? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
How we checked

Why No Interaction Is Listed for Ondansetron

Interactions in our licensed database are recorded against drug classes, not just single drug names. Ondansetron is filed under 7 classifications — including serotonergic drugs, serotonergic drugs, cytochrome p450 1a2 (cyp1a2) substrates. Chinese Mallow has documented interactions with 1 drug class — the most serious being antidiabetes drugs (moderate) — and none of Ondansetron’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.

Keep it in perspective

Chinese Mallow Does Interact With Other Medications

Chinese Mallow has 86 moderate known drug interactions in our database — Ondansetron isn’t one of them. If you take anything else, check it against the full list below.

Moderate 86 No known interaction 2,744 (incl. Ondansetron)
Taking anything else?

Check Another of Your Medications Against Chinese Mallow

Covers the 2,830 medications we’ve checked against Chinese Mallow. Pick one to open its full report.

What to actually watch for

What Ondansetron’s Own FDA Label Lists

This is not an interaction — none of it involves Chinese Mallow. These are the most notable effects listed in the ADVERSE REACTIONS section of Ondansetron’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. 4 of them are worth acting on rather than waiting out — marked below.

  • A heart attack Worth acting on
  • An irregular heartbeat Worth acting on
  • Chest pain Worth acting on
  • Raised blood pressure Worth acting on
  • Migraine
  • A fast or pounding heartbeat
  • Numbness or tingling

From the ADVERSE REACTIONS section of the FDA label for Ondansetron. Read the label on DailyMed › Where a percentage is shown, it is the share of 121,840 voluntary FDA FAERS reports for Ondansetron that mention that effect — a reporting proportion, not an incidence rate and not evidence the drug caused it. Chinese Mallow’s licensed record lists no adverse effects our clinical vocabulary could match, so there is no Chinese Mallow side to compare — that is a limit of the record, not a statement that Chinese Mallow has no side effects.

From our Q&A

Questions About Chinese Mallow or Ondansetron

These are real questions from readers, answered by the pharmacists at HelloPharmacist — written by a person, not generated from a database. Each one covers Chinese Mallow or Ondansetron, not necessarily both, but if one is close to what you were about to ask it will usually go further than a database entry can:

Not quite your question? Ask our pharmacists directly — it is free, there is no account required, and answers usually come back within 24 hours.

Everything else you take

See Every Supplement That Interacts With Ondansetron

This page covers Chinese Mallow only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Ondansetron page lists 195 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), Grapefruit (major), Lithium (major), St. John's Wort (major) and 1,3-dmaa (moderate).

By severity: 4 major · 145 moderate · 46 minor.

From our pharmacist’s overview on the Ondansetron page

“Ondansetron (Zofran) often stands between you and relentless nausea from chemotherapy or surgery, so read this page carefully. Four of the 195 ingredients rate major.”

Reviewed by 2 · Jul 18, 2026

Open the Ondansetron interaction page

How much people look this up

Where Chinese Mallow and Ondansetron 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 Chinese Mallow
Steady interest

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

29 days ago today
Medication Ondansetron
Steady interest

#1,687 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.
  • Citation library: 103,510 references behind our interaction content, 65,311 of them resolved to verified PubMed/DOI sources. See every Chinese Mallow reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The Chinese Mallow and Ondansetron 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 Chinese Mallow

What is Chinese Mallow?

  • Constipation
  • Digestive upset
  • Urinary problems
  • Cough and sore throat
  • Skin soothing (topical)

Chinese Mallow (Malva verticillata) is a leafy plant used in traditional Chinese and Asian medicine, mostly for constipation, urinary complaints, and as a soothing demulcent. Strong scientific evidence in humans is lacking, so its benefits are mostly based on traditional use and early research. Talk with your pharmacist or doctor before using it, and avoid it during pregnancy and breastfeeding.

Malva verticillata · Malvaceae · Seeds, leaves, and flowers · Tea, dried herb, powders, capsules, and topical preparations

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

Chinese Mallow: dosing

There is no established standard dose for Chinese Mallow. Traditional preparations vary widely depending on the part used and the form, and reliable human dosing studies are lacking.If you choose to use it, follow the directions on the product label and do not exceed the suggested amount. Because product strength and quality can differ, it is a good idea to review the label with a pharmacist who can help you decide if it is appropriate for you.

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

Read the full Chinese Mallow monograph & all interactions
Medication

About Ondansetron

What Is Ondansetron Used For?

Brand name: Zofran

Ondansetron is used to prevent nausea and vomiting in several situations. Oral forms (tablets, orally disintegrating tablets, and oral solution) are approved to prevent nausea and vomiting from highly or moderately emetogenic (nausea-causing) cancer chemotherapy, from radiation therapy to the abdomen or whole body, and from surgery.

Ondansetron injection (given intravenously or intramuscularly in a clinical setting) is approved to prevent nausea and vomiting from emetogenic cancer chemotherapy — including high-dose cisplatin — in adults and children as young as 6 months old, as well as to prevent postoperative nausea and vomiting.

Most-Reported Side Effects for Ondansetron

From FAERS, the FDA’s public side-effect reporting system (121,840 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.

Nausea 14,459 reports
Fatigue 10,275 reports
Diarrhea 9,488 reports
Vomiting 8,777 reports
Dyspnea 5,971 reports
See full Ondansetron drug information
Keep checking

Other Drugs & Chinese Mallow

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

0Major
86Moderate
0Minor
2,743No known interaction
86 Moderate 2,743 No interaction
Moderate

86 interactions

Showing 60 of 86 moderate interactions — see all 86 on the Chinese Mallow page.

No interaction 2,743 drugs checked — show the list

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

Showing the 60 most looked-up of 2,743 medications checked with no known interaction — see the full Chinese Mallow list.

See the full Chinese Mallow interactions page
See every supplement checked against Ondansetron, ranked by severity
Evidence & sources

Chinese Mallow References

The 2 references that drive our Chinese Mallow 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.

  1. Shimizu N, Tomoda M. Constituents of the seed of Malva verticillata. I. Structural features of the major neutral polysaccharide. Chem Pharm Bull (Tokyo) 1987;35:4981-4. PubMed
  2. Jeong YT, Song CH. Antidiabetic activities of extract from Malva verticillate seed via the activation of AMP-activated protein kinase. J Microbiol Biotechnol 2011;21(90):921-9. doi: 10.4014/jmb.1104.04015.

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 Chinese Mallow and Ondansetron Together: Common Questions

Is it safe to take Chinese Mallow with Ondansetron?
We do not list a known interaction between Chinese Mallow and Ondansetron. 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.
How was the Chinese Mallow and Ondansetron combination checked?
Interactions in our licensed database are recorded against drug classes. Ondansetron is filed under 7 classifications, and Chinese Mallow has documented interactions with 1 drug class — none of Ondansetron's classifications are among them. A medication can belong to classes beyond those recorded in our dataset, so this describes how the check was run rather than guaranteeing safety.
Does Chinese Mallow interact with any other medications?
Yes. Chinese Mallow has 86 documented drug interactions in our database — Ondansetron is simply not one of them. If you take anything else, it is worth checking each one; they are all listed on this page.
Does Ondansetron interact with any supplements?
Yes. Ondansetron has documented interactions with 195 supplements in our database — Chinese Mallow is not one of them. The Ondansetron 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

Chinese Mallow monograph Uses, safety profile, and every drug interaction in one place Ondansetron drug information The full plain-English guide to this medication Ondansetron supplement interactions Every supplement checked against Ondansetron, 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 2 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Ondansetron and Chinese Mallow?

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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.