Drug & supplement interaction

Histidine + Ponesimod

Ponesimod brand name: Ponvory.

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 Histidine and Ponesimod 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

Histidine and Ponesimod

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 Ponesimod and Histidine 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 Histidine at all — not against Ponesimod, 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.

Histidine safety at a glance

Histidine overall Use caution Likely safe in amounts found in food, but the safety of higher supplement doses is not well established.
Pregnancy Likely Safe When used orally in the amounts found in foods. There is insufficient reliable information available about the safety of histidine when used in larger amounts d... Read the full pregnancy detail
Breastfeeding Likely Safe When used orally in the amounts found in foods. There is insufficient reliable information available about the safety of histidine when used in larger amounts d... 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 Ponesimod and Histidine? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
What to actually watch for

What Ponesimod’s Own FDA Label Lists

This is not an interaction — none of it involves Histidine. These are the most notable effects listed in the ADVERSE REACTIONS section of Ponesimod’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. 10 of them are worth acting on rather than waiting out — marked below.

  • High potassium Worth acting on
  • A slow heartbeat Worth acting on
  • Seizures Worth acting on
  • Chest pain Worth acting on
  • Low mood Worth acting on
  • Raised blood pressure Worth acting on
  • Shortness of breath Worth acting on
  • A low white blood cell count Worth acting on
  • Liver problems Worth acting on
  • A higher chance of infection Worth acting on

Showing the 10 most notable of 25 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 Ponesimod. Read the label on DailyMed › Histidine’s licensed record lists no adverse effects our clinical vocabulary could match, so there is no Histidine side to compare — that is a limit of the record, not a statement that Histidine has no side effects.

Special populations

Histidine in Pregnancy & Breastfeeding

Pregnancy And Lactation Likely Safe

When used orally in the amounts found in foods. There is insufficient reliable information available about the safety of histidine when used in larger amounts during pregnancy or lactation.

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 Ponesimod

This page covers Histidine only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Ponesimod page lists 146 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), American Hellebore (major), Arsenic (major), Cesium (major) and Ephedra (major).

By severity: 8 major · 98 moderate · 40 minor.

From our pharmacist’s overview on the Ponesimod page

“Someone managing relapsing MS with ponesimod (Ponvory) has real reason to read this list closely, since 8 of its 146 documented supplement interactions rate major. The largest group, 121 ingredients, works through CYP3A4, the liver enzyme that clears ponesimod.”

Reviewed by 2 · Jul 18, 2026

Open the Ponesimod interaction page

One more smart check

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

We hold 1,921 real supplement products containing Histidine, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Histidine. Even though Histidine itself has no known interaction with Ponesimod, 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 Histidine and Ponesimod 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 Histidine
Top 10%

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

29 days ago today
Medication Ponesimod
Top half

#984 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. Histidine 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 Histidine reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The Histidine and Ponesimod 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 Histidine

What is Histidine?

  • Skin conditions like eczema
  • Anemia related to kidney disease
  • Allergy and inflammation support
  • General amino acid supplementation
  • Athletic and protein supplementation

Histidine is an essential amino acid your body needs to build proteins and to make compounds like histamine and carnosine. Most people get enough from a normal diet, and good-quality research supporting histidine supplements for specific health conditions is limited. If you are considering a supplement, talk with a pharmacist or doctor first.

Amino acid (typically made commercially through fermentation) · Capsules, tablets, powder, part of amino acid blends and protein supplements

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

Histidine: dosing

There is no well-established standard supplement dose of histidine for treating health conditions. Amounts used in research have varied widely depending on the purpose.If you choose to use a histidine product, follow the directions on the label and do not exceed the recommended amount.

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

Read the full Histidine monograph & all interactions
Medication

About Ponesimod

What Is Ponesimod Used For?

Brand name: Ponvory

Ponvory (ponesimod) is approved for adults with relapsing forms of multiple sclerosis (MS). This includes clinically isolated syndrome (a first MS episode), relapsing-remitting MS, and active secondary progressive MS.

It is not approved for children, and it is only available as an oral tablet under the brand name Ponvory.

Most-Reported Side Effects for Ponesimod

From FAERS, the FDA’s public side-effect reporting system (428 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.

Fatigue 35 reports
Dizziness 24 reports
Dyspnea 23 reports
Headache 22 reports
Nausea 14 reports
See full Ponesimod drug information
Keep checking

Other Drugs & Histidine

Browse every other medication we’ve checked against Histidine — 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 Histidine 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 Histidine list.

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

Histidine References

The 3 sources that drive our Histidine monograph — publicly available pages from reputable medical and government organizations. Every link was verified to work before publishing. Histidine is not covered by the licensed Natural Medicines interaction database, so its page cites these public sources directly.

  1. Histidine — MedlinePlus (U.S. National Library of Medicine) Source
  2. Amino Acids — MedlinePlus (U.S. National Library of Medicine) Source
  3. Dietary Supplements: What You Need to Know — NIH Office of Dietary Supplements 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 Histidine and Ponesimod Together: Common Questions

Is it safe to take Histidine with Ponesimod?
We do not list a known interaction between Histidine and Ponesimod. 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 Ponesimod interact with any supplements?
Yes. Ponesimod has documented interactions with 146 supplements in our database — Histidine is not one of them. The Ponesimod 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

Histidine monograph Uses, safety profile, and every drug interaction in one place Ponesimod drug information The full plain-English guide to this medication Ponesimod supplement interactions Every supplement checked against Ponesimod, 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 3 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Ponesimod and Histidine?

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.