Holly + Ropeginterferon alfa-2b-njft
Ropeginterferon alfa-2b-njft brand name: Besremi.
We found no known interaction between Holly and Ropeginterferon alfa-2b-njft 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.
Holly and Ropeginterferon alfa-2b-njft
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 Ropeginterferon alfa-2b-njft and Holly 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 Holly at all — not against Ropeginterferon alfa-2b-njft, 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.
Holly safety at a glance
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.
Holly in Pregnancy & Breastfeeding
When berries are ingested. There is insufficient reliable information available about the safety of holly leaves; 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
See Every Supplement That Interacts With Ropeginterferon alfa-2b-njft
This page covers Holly only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Ropeginterferon alfa-2b-njft page lists 57 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), Alfalfa (moderate) and Angelica Archangelica (moderate).
By severity: 3 major · 53 moderate · 1 minor.
From our pharmacist’s overview on the Ropeginterferon alfa-2b-njft page
“Ropeginterferon alfa-2b-njft (Besremi), the long-acting interferon injected for polycythemia vera, carries liver toxicity as one of its own known risks, so the 57 supplements and herbs on this page deserve genuine care rather than a quick skim. Thirty-eight of them can also stress the liver, and that overlap is what earns all three maj…”
Reviewed by 2 · Jul 18, 2026
Taking Holly as Part of a Dietary Supplement Product? Check It for Interactions
We hold 11 real supplement products containing Holly, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Holly. Even though Holly itself has no known interaction with Ropeginterferon alfa-2b-njft, another ingredient on your label might. Find your product and we’ll check every ingredient on its label:
Where Holly and Ropeginterferon alfa-2b-njft 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.
#1,137 of 1,452 supplements looked up here in the last 7 days
#2,285 of 2,830 medications looked up here in the last 7 days
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 Holly reference on this page ↓
- Freshness: we automatically re-check this combination every week — this pair was last verified September 13, 2026. The Holly and Ropeginterferon alfa-2b-njft 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.
About Holly
What is Holly?
- Fever
- Cough and chest congestion
- Joint pain (traditional use)
- Digestive complaints
- Mild diuretic
Holly (Ilex aquifolium) is a common ornamental shrub whose bright red berries are poisonous and should never be eaten. There is very little reliable human evidence supporting any health benefit of holly leaves, and because of safety concerns it is generally best avoided as a supplement unless guided by a knowledgeable healthcare professional.
Ilex aquifolium · Aquifoliaceae · Leaves and berries (and bark in some traditions) · Dried leaf tea, tinctures, and homeopathic preparations; berries are not used as a supplement
An interaction check asks whether these two react with each other — it does not ask whether Holly is a good idea for someone in your situation. Here is what our Holly record says about it on its own.
Holly: dosing
There is no established or standardized dose for holly, because it has not been properly studied as a medicine. We cannot provide a safe recommended amount.If you choose to use a commercial holly product despite the limited evidence, follow the directions on the label exactly and never exceed them.
From our Holly monograph — the full record covers uses, side effects and every documented interaction.
About Ropeginterferon alfa-2b
What Is Ropeginterferon alfa-2b Used For?
Brand name: Besremi
BESREMi (ropeginterferon alfa-2b) is used to treat two conditions in adults: polycythemia vera, a bone marrow disorder where the body makes too many red blood cells, and essential thrombocythemia, a condition where the bone marrow makes too many platelets.
Both conditions are given as subcutaneous (under-the-skin) injections of BESREMi, including the BESREMi Pen delivery option.
Other Drugs & Holly
Browse every other medication we’ve checked against Holly — both the ones with a known interaction and the ones without. Select any drug for the full detail.
No drugs match “”.
No interaction 2,829 drugs checked — show the list
We also checked Holly against these medications and found no known interaction in our sources. Open any page to confirm.
- Apixaban ›
- Levothyroxine ›
- Amlodipine ›
- Methylphenidate ›
- Warfarin ›
- Sertraline ›
- Testosterone ›
- Losartan Potassium ›
- Ivermectin ›
- Metoprolol ›
- Rivaroxaban ›
- Aspirin ›
- Rosuvastatin ›
- Acetaminophen ›
- Escitalopram ›
- Abemaciclib ›
- Clopidogrel ›
- Tadalafil ›
- Atorvastatin ›
- Docusate ›
- Tirzepatide ›
- Valacyclovir ›
- Ibuprofen ›
- Methamphetamine ›
- Hydroxyurea ›
- Warfarin Sodium ›
- Semaglutide ›
- Sumatriptan ›
- Prednisone ›
- Propranolol ›
- Lisdexamfetamine ›
- Metformin ›
- Amoxicillin ›
- Lisinopril ›
- Bupropion ›
- Amitriptyline ›
- Methotrexate ›
- Bendamustine ›
- Acyclovir ›
- Doxycycline ›
- Amphetamine ›
- Fluoxetine ›
- Isotretinoin ›
- Lamotrigine ›
- Pregabalin ›
- Azithromycin ›
- Acetaminophen, Codeine ›
- Gabapentin ›
- Amlodipine Besylate ›
- Dextroamphetamine ›
- Clonazepam ›
- Methylene Blue ›
- Omeprazole ›
- Quetiapine ›
- Letrozole ›
- Duloxetine ›
- Naproxen ›
- Buspirone ›
- Citalopram ›
- Ciprofloxacin ›
Showing the 60 most looked-up of 2,829 medications checked with no known interaction — see the full Holly list.
Holly References
The 2 references that drive our Holly 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.
- The Review of Natural Products by Facts and Comparisons. St. Louis, MO: Wolters Kluwer Co., 1999.
- 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.
Taking Holly and Ropeginterferon alfa-2b-njft Together: Common Questions
Is it safe to take Holly with Ropeginterferon alfa-2b-njft?
Do Holly and Ropeginterferon alfa-2b-njft have any of the same side effects?
Does Ropeginterferon alfa-2b-njft interact with any supplements?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
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Still Have a Question About Ropeginterferon alfa-2b-njft and Holly?
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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.