Drug & supplement interaction

Gamboge + Siponimod

Siponimod brand name: Mayzent.

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

We found no known interaction between Gamboge and Siponimod 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

Gamboge and Siponimod

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 Siponimod and Gamboge 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.

Gamboge safety at a glance

Gamboge overall Avoid Gamboge resin is a harsh purgative and can be toxic when swallowed.
Pregnancy Possibly Unsafe When used orally; avoid using. Read the full pregnancy detail
Breastfeeding Possibly Unsafe When used orally; avoid using. Read the full breastfeeding detail

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.

Still wondering about combining Siponimod and Gamboge? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
How we checked

Why No Interaction Is Listed for Siponimod

Interactions in our licensed database are recorded against drug classes, not just single drug names. Siponimod is filed under 4 classifications — including cytochrome p450 2c9 (cyp2c9) substrates, immunosuppressants, cytochrome p450 3a4 (cyp3a4) substrates. Gamboge has documented interactions with 5 drug classes — the most serious being corticosteroids (moderate), digoxin (lanoxin) (moderate) and diuretic drugs (moderate) — and none of Siponimod’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

Gamboge Does Interact With Other Medications

Gamboge has 122 moderate known drug interactions in our database — Siponimod isn’t one of them. If you take anything else, check it against the full list below.

Moderate 122 No known interaction 2,708 (incl. Siponimod)
Taking anything else?

Check Another of Your Medications Against Gamboge

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

What to actually watch for

What Gamboge Itself Has Been Linked To

This is not an interaction — nothing below involves Siponimod. It is the side-effect record for Gamboge on its own, from the licensed Natural Medicines monograph. If something new turns up after you add Gamboge, this list is the first place to look.

  • Stomach pain / Vomiting Additional detail

    “Orally, abdominal pain and vomiting have been reported with gamboge at doses as low as 200 mg. Deaths have been reported after ingestion of 4 grams of gamboge (18).”

    Gamboge · Natural Medicines adverse-effect record, reported in myasthenia gravis.

    1 source cited
    1. 18. Gruenwald J, Brendler T, Jaenicke C. PDR for Herbal Medicines. 1st ed. Montvale, NJ: Medical Economics Company, Inc., 1998.

    “Orally, abdominal pain and vomiting have been reported with gamboge at doses as low as 200 mg (18).”

    Gamboge · Natural Medicines adverse-effect record, reported in myasthenia gravis.

    1 source cited
    1. 18. Gruenwald J, Brendler T, Jaenicke C. PDR for Herbal Medicines. 1st ed. Montvale, NJ: Medical Economics Company, Inc., 1998.

Everything above comes from the Natural Medicines adverse-effect record for Gamboge — expand a row for the licensed statement it rests on. We read the ADVERSE REACTIONS section of Siponimod’s FDA label too, and the two lists don’t meaningfully overlap — which is why no Siponimod column appears here.

Special populations

Gamboge in Pregnancy & Breastfeeding

Pregnancy And Lactation Possibly Unsafe

When used orally; 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

Everything else you take

See Every Supplement That Interacts With Siponimod

This page covers Gamboge only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Siponimod page lists 190 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 Active Hexose Correlated Compound (ahcc) (moderate).

By severity: 3 major · 147 moderate · 40 minor.

From our pharmacist’s overview on the Siponimod page

“Siponimod (Mayzent) treats secondary progressive multiple sclerosis, and because its blood level depends heavily on two liver enzymes, this is a supplement list to respect. Most of these entries can nudge siponimod levels up or down; the three rated major are grapefruit, which raises them, St.”

Reviewed by 2 · Jul 18, 2026

Open the Siponimod interaction page

How much people look this up

Where Gamboge and Siponimod 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 Gamboge
Steady interest

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

29 days ago today
Medication Siponimod
Steady interest

#2,249 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 Gamboge reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The Gamboge and Siponimod 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.
Data structure & sourcing designed and verified by .
Supplement

About Gamboge

What is Gamboge?

  • Laxative (purgative)
  • Expelling intestinal worms
  • Traditional wound care
  • Use as a yellow dye/pigment

Gamboge is a bright yellow tree resin used historically as a strong laxative and as an artists' pigment, but it is toxic in even modest amounts and is not a safe dietary supplement. Modern interest centers on its compound gambogic acid in laboratory cancer research, which does not make the raw resin safe to take. We recommend avoiding oral use of gamboge.

Garcinia hanburyi · Clusiaceae · Dried resin (gum-resin) from the bark/latex · Resin powder, traditional pills, paint pigment (not a typical modern supplement)

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

Gamboge: dosing

There is no established safe dose of gamboge for any health use, and we do not provide one. Because the resin is considered toxic and is not a recognized supplement, there are no reliable, standardized products with proven dosing.If you ever encounter a product that contains gamboge, do not take it without first talking to a pharmacist or doctor. In general, our recommendation is to avoid oral use entirely and choose safer, well-studied options for problems like constipation.

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

Read the full Gamboge monograph & all interactions
Medication

About Siponimod

What Is Siponimod Used For?

Brand name: Mayzent

Mayzent (siponimod) is approved for adults with relapsing forms of multiple sclerosis (MS). This includes three specific types: clinically isolated syndrome (a first episode of MS-like symptoms), relapsing-remitting MS (periods of attacks followed by recovery), and active secondary progressive MS (a phase where the disease gradually worsens but still has active relapses).

It is taken by mouth once daily and is intended as a long-term treatment to reduce relapses and slow disease progression.

Most-Reported Side Effects for Siponimod

From FAERS, the FDA’s public side-effect reporting system (8,869 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.

Fatigue 993 reports
Headache 890 reports
Dizziness 671 reports
Multiple sclerosis relapse 546 reports
Gait disturbance 537 reports
See full Siponimod drug information
Keep checking

Other Drugs & Gamboge

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

0Major
122Moderate
0Minor
2,707No known interaction
122 Moderate 2,707 No interaction
Moderate

122 interactions

Showing 60 of 122 moderate interactions — see all 122 on the Gamboge page.

No interaction 2,707 drugs checked — show the list

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

Showing the 60 most looked-up of 2,707 medications checked with no known interaction — see the full Gamboge list.

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

Gamboge References

The 2 references that drive our Gamboge 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. Gruenwald J, Brendler T, Jaenicke C. PDR for Herbal Medicines. 1st ed. Montvale, NJ: Medical Economics Company, Inc., 1998.
  2. Brinker F. Herb Contraindications and Drug Interactions. 2nd ed. Sandy, OR: Eclectic Medical Publications, 1998.

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 Gamboge and Siponimod Together: Common Questions

Is it safe to take Gamboge with Siponimod?
We do not list a known interaction between Gamboge and Siponimod. 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 Gamboge and Siponimod combination checked?
Interactions in our licensed database are recorded against drug classes. Siponimod is filed under 4 classifications, and Gamboge has documented interactions with 5 drug classes — none of Siponimod'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 Gamboge interact with any other medications?
Yes. Gamboge has 122 documented drug interactions in our database — Siponimod 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 Siponimod interact with any supplements?
Yes. Siponimod has documented interactions with 190 supplements in our database — Gamboge is not one of them. The Siponimod 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

Gamboge monograph Uses, safety profile, and every drug interaction in one place Siponimod drug information The full plain-English guide to this medication Siponimod supplement interactions Every supplement checked against Siponimod, 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 Siponimod and Gamboge?

Our pharmacists answer your medication & supplement questions — free.

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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.