Drug & supplement interaction

Globe Flower + Peginterferon alfa-2b

Peginterferon alfa-2b brand names: Peg-Intron, ViraferonPeg.

No Known Interaction
The bottom line No known interaction

We found no known interaction between Globe Flower and Peginterferon alfa-2b 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

Globe Flower and Peginterferon alfa-2b

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 Peginterferon alfa-2b and Globe Flower 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 Globe Flower at all — not against Peginterferon alfa-2b, 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.

Globe Flower safety at a glance

Globe Flower overall Use caution Limited safety data and it belongs to a plant family known for irritant compounds.
Pregnancy Likely Unsafe When any part of the fresh plant is used orally or topically. There is insufficient reliable information available about the safety of dried globe flower during... Read the full pregnancy detail
Breastfeeding Likely Unsafe When any part of the fresh plant is used orally or topically. There is insufficient reliable information available about the safety of dried globe flower during... 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 Peginterferon alfa-2b and Globe Flower? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
What to actually watch for

What Globe Flower Itself Has Been Linked To

This is not an interaction — nothing below involves Peginterferon alfa-2b. It is the side-effect record for Globe Flower on its own, from the licensed Natural Medicines monograph. If something new turns up after you add Globe Flower, this list is the first place to look.

  • Diarrhea Additional detail

    “Orally, ingestion of fresh globe flower can cause severe irritation of the gastrointestinal tract, with colic and diarrhea. Irritation of the urinary tract can also occur (18). Topically, skin contact with fresh globe flower can cause blisters and burns that are difficult to heal (18).”

    Globe Flower · Natural Medicines adverse-effect record, reported in burns.

    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, ingestion of fresh globe flower can cause severe irritation of the gastrointestinal tract, with colic and diarrhea (18).”

    Globe Flower · Natural Medicines adverse-effect record, reported in diarrhea.

    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 Globe Flower — expand a row for the licensed statement it rests on. We haven’t matched Peginterferon alfa-2b to its FDA label in our system yet, so we can’t compare its own side-effect list here — the leaflet that comes with your prescription is the authoritative list for Peginterferon alfa-2b.

Special populations

Globe Flower in Pregnancy & Breastfeeding

Pregnancy And Lactation Likely Unsafe

When any part of the fresh plant is used orally or topically. There is insufficient reliable information available about the safety of dried globe flower during pregnancy and 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 Peginterferon alfa-2b

This page covers Globe Flower only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Peginterferon alfa-2b page lists 38 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Beer (major), Siberian Cocklebur (major), Wine (major), Ashwagandha (moderate) and Black Cohosh (moderate).

By severity: 3 major · 35 moderate.

From our pharmacist’s overview on the Peginterferon alfa-2b page

“Someone taking peginterferon alfa-2b (Peg-Intron) is usually treating hepatitis C, so the liver is already the organ under strain, and all 38 supplement interactions on file for this drug pile additional liver stress on top of it. That earns genuine caution.”

Reviewed by 2 · Jul 18, 2026

Open the Peginterferon alfa-2b interaction page

How much people look this up

Where Globe Flower and Peginterferon alfa-2b 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 Globe Flower
Steady interest

#1,382 of 1,452 supplements looked up here in the last 7 days

29 days ago today
Medication Peginterferon alfa-2b
Steady interest

#2,348 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 Globe Flower reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 13, 2026. The Globe Flower and Peginterferon alfa-2b 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 Globe Flower

What is Globe Flower?

  • Skin and minor wound care (traditional)
  • Scurvy and vitamin support (historical folk use)
  • Infections (traditional/topical)
  • General tonic or folk remedy

Globe Flower (Trollius europaeus) is a bright yellow wildflower used mainly in traditional European folk medicine, but there is very little modern scientific research to support any health benefit. Because it belongs to the buttercup family, which contains irritating compounds, it should be treated with caution and is not recommended for self-treatment. Talk with a pharmacist or doctor before using it.

Trollius europaeus · Ranunculaceae · Flowers (and sometimes the whole flowering plant) · Dried flowers, tea, tincture, topical preparations

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

Globe Flower: dosing

There is no established or standardized dose for Globe Flower. It has not been studied enough to know a safe or effective amount.If a product contains Globe Flower, follow the manufacturer's label and do not exceed it.

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

Read the full Globe Flower monograph & all interactions
Medication

About Peginterferon Alfa-2b (PEG-Intron)

What Is Peginterferon Alfa-2b (PEG-Intron) Used For?

Brand names: Peg-Intron, ViraferonPeg

  • Peginterferon alfa-2b is used alone or in combination with ribavirin (a medication) to treat chronic (long-term) hepatitis C infection (swelling of the liver caused by a virus) in people who show signs of liver damage and who have not been treated with interferon alpha (medication similar to peginterferon alfa-2b) in the past. Peginterferon alfa-2b is in a class of medications called interferons. Peginterferon alfa-2b is a combination of interferon and polyethylene glycol, which helps the interferon stay active in your body for a longer period of time. Peginterferon alpha-2b works by decreasing the amount of hepatitis C virus (HCV) in the body. Peginterferon alfa-2b may not cure hepatitis C or prevent you from developing complications of hepatitis C such as cirrhosis (scarring) of the liver, liver failure, or liver cancer. Peginterferon alfa-2b may not prevent the spread of hepatitis C to other people.

See full Peginterferon Alfa-2b (PEG-Intron) drug information
Keep checking

Other Drugs & Globe Flower

Browse every other medication we’ve checked against Globe Flower — 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
No interaction 2,829 drugs checked — show the list
Evidence & sources

Globe Flower References

The 1 references that drive our Globe Flower 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.

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 Globe Flower and Peginterferon alfa-2b Together: Common Questions

Is it safe to take Globe Flower with Peginterferon alfa-2b?
We do not list a known interaction between Globe Flower and Peginterferon alfa-2b. 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 Peginterferon alfa-2b interact with any supplements?
Yes. Peginterferon alfa-2b has documented interactions with 38 supplements in our database — Globe Flower is not one of them. The Peginterferon alfa-2b interaction page linked on this page lists every one, ranked by severity.

Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy

Still Have a Question About Peginterferon alfa-2b and Globe Flower?

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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.