Drug & supplement interaction

Golden Ragwort + Pemigatinib

Pemigatinib brand name: Pemazyre.

No Known Interaction
Medically reviewed by · Updated July 2026 · Pair last verified Sep 13, 2026
The bottom line No known interaction

We found no known interaction between Golden Ragwort and Pemigatinib 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 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.

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Interaction report

Golden Ragwort and Pemigatinib

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 Pemigatinib and Golden Ragwort 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.

Golden Ragwort safety at a glance

Golden Ragwort overall Avoid It contains pyrrolizidine alkaloids that can be toxic to the liver.
Pregnancy Likely Unsafe When used orally. Golden ragwort preparations containing hepatotoxic pyrrolizidine alkaloid (PA) constituents might be teratogenic and hepatotoxic. There is ins... Read the full pregnancy detail
Breastfeeding Likely Unsafe When used orally. Hepatotoxic pyrrolizidine alkaloid (PA) constituents in golden ragwort are excreted in breast-milk. There is insufficient reliable information... 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 Pemigatinib and Golden Ragwort? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
How we checked

Why No Interaction Is Listed for Pemigatinib

Interactions in our licensed database are recorded against drug classes, not just single drug names. Pemigatinib is filed under 2 classifications — cytochrome p450 3a4 (cyp3a4) substrates, oral drugs. Golden Ragwort has documented interactions with 1 drug class — the most serious being cytochrome p450 3a4 (cyp3a4) inducers (moderate) — and none of Pemigatinib’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

Golden Ragwort Does Interact With Other Medications

Golden Ragwort has 87 moderate known drug interactions in our database — Pemigatinib isn’t one of them. If you take anything else, check it against the full list below.

Moderate 87 No known interaction 2,743 (incl. Pemigatinib)
Taking anything else?

Check Another of Your Medications Against Golden Ragwort

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

What to actually watch for

No Interaction Found — But Data Suggests Golden Ragwort and Pemigatinib May Share Several of the Same Side Effects

This is not an interaction. Neither one changes how your body handles the other, and nothing here says they react together. What our sources do show is that each has separately been linked to the effects below — so taking both can make those effects more likely to turn up, and harder to pin on one or the other if they do. One of them is worth acting on rather than waiting out — marked below.

  • Liver problems Worth acting on Additional detail

    Golden Ragwort

    “Orally, the major concern with golden ragwort use is its pyrrolizidine alkaloid (PA) content. These constituents can cause liver injury. Chronic exposure to other plants containing hepatotoxic PA constituents is associated with veno-occlusive disease. Subacute veno-occlusive disease can cause vague symptoms, including colicky pains, vomiting, diarrhea, and ascites within several days;”

    Golden Ragwort · Natural Medicines adverse-effect record, reported in diarrhea.

    3 sources cited
    1. 12841. Chojkier M. Hepatic sinusoidal-obstruction syndrome: toxicity of pyrrolizidine alkaloids. J Hepatol 2003;39:437-46. PubMed
    2. 12842. Roeder E. Medicinal plants in Europe containing pyrrolizidine alkaloids. Pharmazie 1995;50:83-98.
    3. 4021. WHO working group. Pyrrolizidine alkaloids. Environmental Health Criteria, 80. WHO: Geneva, 1988.

    Pemigatinib

    Listed in the ADVERSE REACTIONS section of the FDA label for Pemigatinib. Read the label on DailyMed ›

  • Diarrhea / Vomiting reported in 5.3% of FDA reports for Pemigatinib Additional detail

    Golden Ragwort

    Recorded for Golden Ragwort in the same Natural Medicines adverse-effect record shown under Liver problems above.

    Pemigatinib

    Listed in the ADVERSE REACTIONS section of the FDA label for Pemigatinib, and in voluntary FDA adverse-event reports. Read the label on DailyMed ›

Reported for Golden Ragwort but not commonly for Pemigatinib: raised blood pressure.

Effects for Pemigatinib come from the ADVERSE REACTIONS section of its FDA label; effects for Golden Ragwort come from the Natural Medicines adverse-effect record, quoted above. Where a percentage is shown, it is the share of 788 voluntary FDA FAERS reports for Pemigatinib that mention that effect — a reporting proportion, not an incidence rate and not evidence the drug caused it. Wording is matched across sources by our own clinical vocabulary, so treat this as a prompt to pay attention, not a diagnosis.

Special populations

Golden Ragwort in Pregnancy & Breastfeeding

Pregnancy Likely Unsafe

When used orally. Golden ragwort preparations containing hepatotoxic pyrrolizidine alkaloid (PA) constituents might be teratogenic and hepatotoxic. There is insufficient reliable information available about the safety of using golden ragwort products that do not contain hepatotoxic PAs during pregnancy.

Lactation Likely Unsafe

When used orally. Hepatotoxic pyrrolizidine alkaloid (PA) constituents in golden ragwort are excreted in breast-milk. There is insufficient reliable information available about the safety of using golden ragwort products that are PA-free during lactation; 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 Pemigatinib

This page covers Golden Ragwort only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Pemigatinib 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 Pemigatinib page

“Pemigatinib (Pemazyre) is a targeted therapy for bile duct cancer, and it only works if its blood level stays where it should. Of the 138 supplements and herbs on file, 121 affect the liver enzyme (CYP3A4) that clears pemigatinib, which can push levels up toward worse side effects or pull them down until the cancer goes undertreated.”

Reviewed by 2 · Jul 18, 2026

Open the Pemigatinib interaction page

One more smart check

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

We hold 2 real supplement products containing Golden Ragwort, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Golden Ragwort. Even though Golden Ragwort itself has no known interaction with Pemigatinib, 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 Golden Ragwort and Pemigatinib 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 Golden Ragwort
Top half

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

29 days ago today
Medication Pemigatinib
Top half

#1,371 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 Golden Ragwort reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 13, 2026. The Golden Ragwort and Pemigatinib records this page draws on were last updated July 11, 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 Golden Ragwort

What is Golden Ragwort?

  • Menstrual complaints
  • Easing childbirth (traditional)
  • Urinary discomfort
  • Sore throat (folk use)

Golden Ragwort is a flowering plant once used in traditional and folk medicine, mainly for menstrual and female reproductive complaints. It contains pyrrolizidine alkaloids that can cause serious liver damage, so it is not considered safe for internal use, and modern herbalists generally avoid it.

Packera aurea · Asteraceae · Aerial parts (leaves, stems, flowers) and roots · Tea, tincture, dried herb

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

Golden Ragwort: dosing

There is no established safe dose for Golden Ragwort, and no standardized products are recommended. Because it contains liver-toxic pyrrolizidine alkaloids, health authorities generally advise against taking it at all.If you come across a product that contains this plant, do not assume any amount is safe.

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

Read the full Golden Ragwort monograph & all interactions
Medication

About Pemigatinib

What Is Pemigatinib Used For?

Brand name: Pemazyre

Pemazyre (pemigatinib) is used to treat adults with a type of bile duct cancer called cholangiocarcinoma that cannot be surgically removed (locally advanced or metastatic) and has already been treated with at least one prior therapy. It is only for tumors that carry a specific gene change — an FGFR2 fusion or rearrangement — confirmed by an FDA-approved test. This approval is based on tumor response rates, and further studies are underway to confirm long-term benefit.

Pemazyre is also used to treat adults with relapsed or refractory myeloid/lymphoid neoplasms (MLNs) — blood or lymph system cancers that have stopped responding to or come back after prior treatment — when those cancers carry an FGFR1 rearrangement gene change.

Most-Reported Side Effects for Pemigatinib

From FAERS, the FDA’s public side-effect reporting system (821 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.

Disease progression 140 reports
Fatigue 79 reports
Alopecia 63 reports
Cholangiocarcinoma 60 reports
Hyperphosphataemia 51 reports
See full Pemigatinib drug information
Keep checking

Other Drugs & Golden Ragwort

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

0Major
87Moderate
0Minor
2,742No known interaction
87 Moderate 2,742 No interaction
Moderate

87 interactions

Showing 60 of 87 moderate interactions — see all 87 on the Golden Ragwort page.

No interaction 2,742 drugs checked — show the list

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

Showing the 60 most looked-up of 2,742 medications checked with no known interaction — see the full Golden Ragwort list.

See the full Golden Ragwort interactions page
See every supplement checked against Pemigatinib, ranked by severity
Evidence & sources

Golden Ragwort References

The 4 references that drive our Golden Ragwort 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. WHO working group. Pyrrolizidine alkaloids. Environmental Health Criteria, 80. WHO: Geneva, 1988.
  2. Chojkier M. Hepatic sinusoidal-obstruction syndrome: toxicity of pyrrolizidine alkaloids. J Hepatol 2003;39:437-46. PubMed
  3. Roeder E. Medicinal plants in Europe containing pyrrolizidine alkaloids. Pharmazie 1995;50:83-98.
  4. Wang YP, Yan J, Fu PP, Chou MW. Human liver microsomal reduction of pyrrolizidine alkaloid N-oxides to form the corresponding carcinogenic parent alkaloid. Toxicol Lett 2005;155:411-20. 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.

Pharmacist Counseling Corner

Taking Golden Ragwort and Pemigatinib Together: Common Questions

Is it safe to take Golden Ragwort with Pemigatinib?
We do not list a known interaction between Golden Ragwort and Pemigatinib. 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.
Do Golden Ragwort and Pemigatinib have any of the same side effects?
Yes — our sources link each of them separately to 3 of the same effects. That is not an interaction: neither changes how your body handles the other. It does mean that if one of those effects turns up, it can be harder to tell which one is behind it. They are listed on this page with the source behind each.
How was the Golden Ragwort and Pemigatinib combination checked?
Interactions in our licensed database are recorded against drug classes. Pemigatinib is filed under 2 classifications, and Golden Ragwort has documented interactions with 1 drug class — none of Pemigatinib'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 Golden Ragwort interact with any other medications?
Yes. Golden Ragwort has 87 documented drug interactions in our database — Pemigatinib 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 Pemigatinib interact with any supplements?
Yes. Pemigatinib has documented interactions with 138 supplements in our database — Golden Ragwort is not one of them. The Pemigatinib 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

Golden Ragwort monograph Uses, safety profile, and every drug interaction in one place Pemigatinib drug information The full plain-English guide to this medication Pemigatinib supplement interactions Every supplement checked against Pemigatinib, 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 4 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Pemigatinib and Golden Ragwort?

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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.