Drug & supplement interaction

Hydrangea + 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 Hydrangea 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

Hydrangea 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 Hydrangea 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.

Hydrangea safety at a glance

Hydrangea overall Use caution Human safety data are limited, and large or prolonged doses may cause unwanted effects.
Pregnancy Avoid Not enough safety information exists, so it is best avoided during pregnancy.
Breastfeeding Avoid There is no reliable safety data, so avoid use while breastfeeding.

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

Still wondering about combining Pemigatinib and Hydrangea? 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. Hydrangea has documented interactions with 1 drug class — the most serious being lithium (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

Hydrangea Does Interact With Other Medications

Hydrangea has 1 moderate known drug interaction in our database — Pemigatinib isn’t one of them. If you take anything else, check it against the full list below.

Moderate 1 No known interaction 2,829 (incl. Pemigatinib)
Taking anything else?

Check Another of Your Medications Against Hydrangea

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

What to actually watch for

No Interaction Found — But Data Suggests Hydrangea and Pemigatinib May Share a Side Effect

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.

  • Dizziness Additional detail

    Hydrangea

    “Orally, hydrangea may cause gastroenteritis, dizziness, and a feeling of tightness in the chest (4).”

    Hydrangea · Natural Medicines adverse-effect record, reported in vertigo.

    1 source cited
    1. 4. Newall CA, Anderson LA, Philpson JD. Herbal Medicine: A Guide for Healthcare Professionals. London, UK: The Pharmaceutical Press, 1996.

    “Orally, hydrangea may cause dizziness (4).”

    Hydrangea · Natural Medicines adverse-effect record, reported in vertigo.

    1 source cited
    1. 4. Newall CA, Anderson LA, Philpson JD. Herbal Medicine: A Guide for Healthcare Professionals. London, UK: The Pharmaceutical Press, 1996.

    Pemigatinib

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

Effects for Pemigatinib come from the ADVERSE REACTIONS section of its FDA label; effects for Hydrangea 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.

Everything else you take

See Every Supplement That Interacts With Pemigatinib

This page covers Hydrangea 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 Hydrangea as Part of a Dietary Supplement Product? Check It for Interactions

We hold 337 real supplement products containing Hydrangea, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Hydrangea. Even though Hydrangea 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 Hydrangea 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 Hydrangea
Top 25%

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

29 days ago today
Medication Pemigatinib
Steady interest

#2,662 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 Hydrangea reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 13, 2026. The Hydrangea and Pemigatinib 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 Hydrangea

What is Hydrangea?

  • Kidney and bladder stones
  • Urinary tract complaints
  • Enlarged prostate symptoms
  • Mild diuretic (increasing urine)
  • Bladder infections (traditional use)

Hydrangea root has a long history in folk medicine, mainly for urinary and kidney stone complaints, but there is very little modern human research to confirm it works for any condition. Because safety data are limited and large amounts may be harmful, it is best to talk with a pharmacist or doctor before using it.

Hydrangea arborescens · Hydrangeaceae · Root and rhizome (underground stem) · Dried root, tincture, liquid extract, capsules, tea

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

Hydrangea: dosing

There is no well-established or standardized dose for hydrangea, because it has not been studied carefully in people. Traditional preparations used the dried root as a tea or tincture, but reliable, specific amounts are not available.If you choose to use a product, follow the directions on the label and do not exceed them.

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

Read the full Hydrangea monograph & all interactions
Medication

About Pemigatinib

What Is Pemigatinib Used For?

Brand name: Pemazyre

Pemazyre (pemigatinib) is used to treat adults with previously treated, unresectable locally advanced or metastatic cholangiocarcinoma (bile duct cancer) whose tumors have a specific genetic change called an FGFR2 fusion or rearrangement, confirmed by an FDA-approved test. This approval is based on tumor response rates; continued approval may depend on results from further confirmatory studies.

Pemazyre is also approved to treat adults with relapsed or refractory myeloid/lymphoid neoplasms (MLNs) — certain blood and bone marrow cancers — that carry an FGFR1 rearrangement and have come back or stopped responding to prior treatment.

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 & Hydrangea

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

0Major
1Moderate
0Minor
2,828No known interaction
1 Moderate 2,828 No interaction
Moderate

1 interaction

No interaction 2,828 drugs checked — show the list

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

Showing the 60 most looked-up of 2,828 medications checked with no known interaction — see the full Hydrangea list.

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

Hydrangea References

The 1 references that drive our Hydrangea 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. Newall CA, Anderson LA, Philpson JD. Herbal Medicine: A Guide for Healthcare Professionals. London, UK: The Pharmaceutical Press, 1996.

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 Hydrangea and Pemigatinib Together: Common Questions

Is it safe to take Hydrangea with Pemigatinib?
We do not list a known interaction between Hydrangea 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 Hydrangea and Pemigatinib have any of the same side effects?
Yes — our sources link each of them separately to one 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 Hydrangea and Pemigatinib combination checked?
Interactions in our licensed database are recorded against drug classes. Pemigatinib is filed under 2 classifications, and Hydrangea 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 Hydrangea interact with any other medications?
Yes. Hydrangea has 1 documented drug interaction 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 — Hydrangea 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

Hydrangea 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 1 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Pemigatinib and Hydrangea?

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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.