Drug & supplement interaction

European Mistletoe + Talazoparib

Talazoparib brand name: Talzenna.

No Known Interaction

Medically reviewed by Dr. Brian Staiger, PharmD, BCPS · Updated July 2026 · Pair last verified Sep 13, 2026

The bottom line No known interaction

We found no known interaction between European Mistletoe and Talazoparib 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

European Mistletoe and Talazoparib

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 Talazoparib and European Mistletoe 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.

European Mistletoe safety at a glance

European Mistletoe overall Use caution Raw mistletoe is toxic if swallowed; standardized products should only be used under medical supervision.

Pregnancy Likely Unsafe When used orally or subcutaneously. European mistletoe might have uterine stimulant and abortifacient activity. Read the full pregnancy detail

Breastfeeding Avoid Avoid while breastfeeding because safety has not been established.

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 Talazoparib and European Mistletoe? Ask Dr. Brian Staiger, PharmD, BCPS directly ›

How we checked

Why No Interaction Is Listed for Talazoparib

Interactions in our licensed database are recorded against drug classes, not just single drug names. Talazoparib is filed under 2 classifications — p-glycoprotein substrates, oral drugs. European Mistletoe has documented interactions with 2 drug classes — the most serious being antihypertensive drugs (moderate) and immunosuppressants (moderate) — and none of Talazoparib’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

European Mistletoe Does Interact With Other Medications

European Mistletoe has 293 moderate known drug interactions in our database — Talazoparib isn’t one of them. If you take anything else, check it against the full list below.

Moderate 293 No known interaction 2,537 (incl. Talazoparib)

Taking anything else?

Check Another of Your Medications Against European Mistletoe

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

What to actually watch for

No Interaction Found — But Data Suggests European Mistletoe and Talazoparib 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. 2 of them are worth acting on rather than waiting out — marked below.

Liver problems Worth acting on Additional detail
European Mistletoe

“Orally, European mistletoe seems to be well tolerated when used in small amounts. However, a thorough evaluation of safety outcomes has not been conducted. Parenterally, European mistletoe may be safe when administered by a healthcare provider.”

European Mistletoe · Natural Medicines adverse-effect record, reported in cluster headache.
“Orally, European mistletoe has been associated with two cases of hepatotoxicity when used in combination with other herbal ingredients. In one case, in which a patient took a combination herbal product, it was deemed unlikely that European mistletoe was the causative agent. It was determined to be most likely due to another ingredient or product contamination.”

European Mistletoe · Natural Medicines adverse-effect record, reported in fever.
4 sources cited

3932. Harvey J, Colin-Jones DG. Mistletoe hepatitis. Br Med J (Clin Res Ed) 1981;282:186-7.

88777. Kim HJ, Kim H, Ahn JH, Suk JH. Liver injury induced by herbal extracts containing mistletoe and kudzu. J Altern Complement Med 2015;21(3):180-5. PubMed

16385. Schoffski P, Breidenbach I, Krauter J, et al. Weekly 24 h infusion of aviscumine (rViscumin): A phase I study in patients with solid tumours. Eur J Cancer 2005;41:1431-8.

93261. Kienle GS, Grugel R, Kiene H. Safety of higher dosages of Viscum album L. in animals and humans--systematic review of immune changes and safety parameters. BMC Complement Altern Med. 2011 Aug 28;11:72. PubMed
Talazoparib

Listed in the ADVERSE REACTIONS section of the FDA label for Talazoparib. Read the label on DailyMed ›
A higher chance of infection Worth acting on Additional detail
European Mistletoe
“Subcutaneously, European mistletoe may cause allergic reactions or flu-like symptoms or mild infections. Early research shows that European mistletoe is not associated with an increase in side effects when it is administered in conjunction with targeted cancer treatments such as monoclonal antibodies and immunotherapy regimens, including PD-1/PD-L1 or CTLA-4 inhibitors.”

European Mistletoe · Natural Medicines adverse-effect record, reported in acute respiratory distress syndrome (ards).
6 sources cited

7044. Kaegi E. Unconventional therapies for cancer: 3. Iscador. Task Force on Alternative Therapies of the Canadian Breast Cancer Research Initiative. CMAJ 1998;158:1157-9.

7045. Grossarth-Matichek R, Kiene H, Baumgartner SM, Ziegler R. Use of Iscador, an extract of European mistletoe (Viscum album), in cancer treatment: prospective nonrandomized and randomized matched-pair studies nested within a cohort study. Altern Ther Health

9769. Deliorman D, Calis I, Ergun F. A new acyclic monoterpene glucoside from Viscum album ssp. album. Fitoterapia 2001;72:101-5. PubMed

93261. Kienle GS, Grugel R, Kiene H. Safety of higher dosages of Viscum album L. in animals and humans--systematic review of immune changes and safety parameters. BMC Complement Altern Med. 2011 Aug 28;11:72. PubMed

96490. Thronicke A, Steele ML, Grah C, Matthes B, Schad F. Clinical safety of combined therapy of immune checkpoint inhibitors and Viscum album L. therapy in patients with advanced or metastatic cancer. BMC Complement Altern Med. 2017 Dec 13;17(1):534. PubMed

96489. Schad F, Axtner J, Kroz M, Matthes H, Steele ML. Safety of combined treatment with monoclonal antibodies and Viscum album L preparations. Integr Cancer Ther. 2018 Mar;17(1):41-51.
Talazoparib

Listed in the ADVERSE REACTIONS section of the FDA label for Talazoparib. Read the label on DailyMed ›
Fever Additional detail

European Mistletoe

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

Talazoparib

Listed in the ADVERSE REACTIONS section of the FDA label for Talazoparib. Read the label on DailyMed ›
Tiredness / Headache reported in 6.8% of FDA reports for Talazoparib Additional detail
European Mistletoe
“Orally, European mistletoe may cause seizures, coma, and death (18). Subcutaneously, European mistletoe can cause headaches or fatigue or malaise. When injected into the tumor, European mistletoe can cause headaches. Intravenous infusion of aviscumine, a pure form of mistletoe lectin I produced by recombinant DNA techniques, can cause fatigue.”

European Mistletoe · Natural Medicines adverse-effect record, reported in epilepsy.
6 sources cited

18. Gruenwald J, Brendler T, Jaenicke C. PDR for Herbal Medicines. 1st ed. Montvale, NJ: Medical Economics Company, Inc., 1998.

7044. Kaegi E. Unconventional therapies for cancer: 3. Iscador. Task Force on Alternative Therapies of the Canadian Breast Cancer Research Initiative. CMAJ 1998;158:1157-9.

7045. Grossarth-Matichek R, Kiene H, Baumgartner SM, Ziegler R. Use of Iscador, an extract of European mistletoe (Viscum album), in cancer treatment: prospective nonrandomized and randomized matched-pair studies nested within a cohort study. Altern Ther Health

9769. Deliorman D, Calis I, Ergun F. A new acyclic monoterpene glucoside from Viscum album ssp. album. Fitoterapia 2001;72:101-5. PubMed

93261. Kienle GS, Grugel R, Kiene H. Safety of higher dosages of Viscum album L. in animals and humans--systematic review of immune changes and safety parameters. BMC Complement Altern Med. 2011 Aug 28;11:72. PubMed

93265. Steele ML, Axtner J, Happe A, Kröz M, Matthes H, Schad F. Adverse Drug Reactions and Expected Effects to Therapy with Subcutaneous Mistletoe Extracts (Viscum album L.) in Cancer Patients. Evid Based Complement Alternat Med. 2014;2014:724258.
Talazoparib

Listed in the ADVERSE REACTIONS section of the FDA label for Talazoparib, and in voluntary FDA adverse-event reports. Read the label on DailyMed ›
Diarrhea / Vomiting / Nausea Additional detail
European Mistletoe
“Orally, European mistletoe may cause vomiting, diarrhea, and intestinal cramps (18). Intraperitoneal and intratumoral injection may cause nausea, vomiting, and abdominal pain. Subcutaneously, European mistletoe may cause flatulence, loose stools, diarrhea, nausea, and vomiting. Intravenously, aviscumine, a pure form of mistletoe lectin I produced by recombinant DNA techniques, may cause nausea and vomiting.”

European Mistletoe · Natural Medicines adverse-effect record, reported in diarrhea.
6 sources cited

18. Gruenwald J, Brendler T, Jaenicke C. PDR for Herbal Medicines. 1st ed. Montvale, NJ: Medical Economics Company, Inc., 1998.

7106. Huber R, Barth H, Schmitt-Graff A, Klein R. Hypereosinophilia induced by high-dose intratumoral and peritumoral mistletoe application to a patient with pancreatic carcinoma. J Altern Complement Med 2000;6:305-10. PubMed

93264. Schad F, Atxner J, Buchwald D, Happe A, Popp S, Kröz M, Matthes H. Intratumoral Mistletoe (Viscum album L) Therapy in Patients With Unresectable Pancreas Carcinoma: A Retrospective Analysis. Integr Cancer Ther. 2014 Jul;13(4):332-40.

96495. Steele ML, Axtner J, Happe A, Kroz M, Matthes H, Schad F. Use and safety of intratumoral application of European mistletoe (Visum album L) preparations in oncology. Integr Cancer Ther. 2015 Mar;14(2):140-8.

93261. Kienle GS, Grugel R, Kiene H. Safety of higher dosages of Viscum album L. in animals and humans--systematic review of immune changes and safety parameters. BMC Complement Altern Med. 2011 Aug 28;11:72. PubMed

93265. Steele ML, Axtner J, Happe A, Kröz M, Matthes H, Schad F. Adverse Drug Reactions and Expected Effects to Therapy with Subcutaneous Mistletoe Extracts (Viscum album L.) in Cancer Patients. Evid Based Complement Alternat Med. 2014;2014:724258.
Talazoparib

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

Reported for European Mistletoe but not commonly for Talazoparib: shortness of breath, an allergic reaction, stomach pain and low potassium.

Effects for Talazoparib come from the ADVERSE REACTIONS section of its FDA label; effects for European Mistletoe come from the Natural Medicines adverse-effect record, quoted above. Where a percentage is shown, it is the share of 1,699 voluntary FDA FAERS reports for Talazoparib 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

European Mistletoe in Pregnancy & Breastfeeding

Pregnancy Likely Unsafe

When used orally or subcutaneously. European mistletoe might have uterine stimulant and abortifacient activity.

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

Overlapping uses

What Talazoparib Is Prescribed For, and What European Mistletoe Has Been Studied For

These two come up together because they touch the same health topic — not because they do the same job. Talazoparib is a prescription medicine with approved uses on its FDA label. European Mistletoe is a supplement: what follows is what researchers have looked at it for, and how strong that evidence is.

Talazoparib is prescribed for: Talzenna (talazoparib) is used as a single agent to treat adults with HER2-negative locally advanced or metastatic breast cancer who carry a germline BRCA mutation (an inherited change in a DNA-repair gene). Patients must be selected for this use based on an FDA-approved test. Talzenna is also used in combination with another medicine called enzalutamide to treat adults with metastatic castration-resistant prostate cancer (mCRPC — prostate cancer that has spread and no longer responds to standard hormone therapy) whose tumors have mutations in homologous recombination repair (HRR) genes involved in DNA repair.

European Mistletoe has been studied for:

Breast cancer studied, not established European Mistletoe has been studied for this. Natural Medicines rates the evidence: Insufficient Reliable Evidence To Rate Read what the research shows

European Mistletoe for breast cancer

It is unclear if subcutaneous European mistletoe extract is beneficial in patients with breast cancer. Oral European mistletoe has not been evaluated for this use.

Effectiveness ratings and the research summaries above are the verbatim record from the Natural Medicines database, which grades evidence from “Effective” down to “Insufficient Reliable Evidence To Rate”. A rating below the top of that scale means researchers have looked at it — not that it works, and never that it can stand in for a prescribed medicine. Do not stop or replace Talazoparib on your own; if you are taking European Mistletoe for the same health topic, tell your prescriber, especially if the medicine is being adjusted to a target.

Everything else you take

See Every Supplement That Interacts With Talazoparib

This page covers European Mistletoe only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Talazoparib page lists 54 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), St. John's Wort (major), Bitter Melon (moderate), Black Pepper (moderate) and Bulbine Natalensis (moderate).

By severity: 2 major · 35 moderate · 17 minor.

From our pharmacist’s overview on the Talazoparib page

“Talazoparib (Talzenna) treats certain BRCA-mutated cancers, and with a drug doing that job I want its blood level exactly where the oncologist set it. The 54 supplements on this list mostly threaten that in one of two ways.”

Reviewed by 2 · Jul 18, 2026

Open the Talazoparib interaction page

One more smart check

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

We hold 91 real supplement products containing European Mistletoe, each one broken down to its full ingredient list — and combination products often carry several ingredients besides European Mistletoe. Even though European Mistletoe itself has no known interaction with Talazoparib, 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 European Mistletoe and Talazoparib 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 European Mistletoe

Top half

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

29 days ago today

Medication Talazoparib

Steady interest

#2,671 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 European Mistletoe reference on this page ↓
Freshness: we automatically re-check this combination every week — this pair was last verified September 13, 2026. The European Mistletoe and Talazoparib 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 Dr. Brian Staiger, PharmD, BCPS.

Supplement

About European Mistletoe

What is European Mistletoe?

Cancer supportive care
Immune support
High blood pressure
Anxiety and stress
Inflammation

European mistletoe is a parasitic plant most studied as an injectable extract used alongside conventional cancer care in some European countries, mainly to improve quality of life rather than to cure cancer. The plant is toxic if eaten, and oral or self-treatment can be dangerous, so it should only be used under medical supervision. Talk to your pharmacist or doctor before using any mistletoe product.

Viscum album · Santalaceae · Leaves, stems, and young twigs (whole aerial parts) · Injectable extracts (used in some countries), capsules, tinctures, teas, and standardized extracts

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

European Mistletoe: dosing

There is no single standard dose of European mistletoe for the general public. Injectable extracts used in clinical settings are dosed and adjusted by trained health professionals based on the specific product and the person's response.Because oral mistletoe products can be toxic and are not well studied, we cannot recommend a safe home dose. Never use mistletoe to self-treat a serious condition like cancer or high blood pressure.

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

Read the full European Mistletoe monograph & all interactions

Medication

About Talazoparib

What Is Talazoparib Used For?

Brand name: Talzenna

Talzenna (talazoparib) is used as a single agent to treat adults with HER2-negative locally advanced or metastatic breast cancer who carry a germline BRCA mutation (an inherited change in a DNA-repair gene). Patients must be selected for this use based on an FDA-approved test.

Talzenna is also used in combination with another medicine called enzalutamide to treat adults with metastatic castration-resistant prostate cancer (mCRPC — prostate cancer that has spread and no longer responds to standard hormone therapy) whose tumors have mutations in homologous recombination repair (HRR) genes involved in DNA repair.

Most-Reported Side Effects for Talazoparib

From FAERS, the FDA’s public side-effect reporting system (1,763 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.

Anemia 273 reports

Neoplasm progression 171 reports

Fatigue 123 reports

Thrombocytopenia 95 reports

Haemoglobin decreased 80 reports

See full Talazoparib drug information

Keep checking

Other Drugs & European Mistletoe

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

0Major

293Moderate

0Minor

2,536No known interaction

293 Moderate 2,536 No interaction

Moderate

293 interactions

Showing 60 of 293 moderate interactions — see all 293 on the European Mistletoe page.

No interaction 2,536 drugs checked — show the list

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

Showing the 60 most looked-up of 2,536 medications checked with no known interaction — see the full European Mistletoe list.

See the full European Mistletoe interactions page

See every supplement checked against Talazoparib, ranked by severity

Evidence & sources

European Mistletoe References

The 35 references that drive our European Mistletoe 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.

Wichtl MW. Herbal Drugs and Phytopharmaceuticals. Ed. N.M. Bisset. Stuttgart: Medpharm GmbH Scientific Publishers, 1994.
Gruenwald J, Brendler T, Jaenicke C. PDR for Herbal Medicines. 1st ed. Montvale, NJ: Medical Economics Company, Inc., 1998.
Brinker F. Herb Contraindications and Drug Interactions. 2nd ed. Sandy, OR: Eclectic Medical Publications, 1998.
Harvey J, Colin-Jones DG. Mistletoe hepatitis. Br Med J (Clin Res Ed) 1981;282:186-7.
Natl Cancer Inst. Mistletoe (PDQ). CancerNet. www.cancernet.nci.nih.gov/cam/mistletoe.htm#7 (Accessed 30 March 2001).
Kaegi E. Unconventional therapies for cancer: 3. Iscador. Task Force on Alternative Therapies of the Canadian Breast Cancer Research Initiative. CMAJ 1998;158:1157-9.
Grossarth-Matichek R, Kiene H, Baumgartner SM, Ziegler R. Use of Iscador, an extract of European mistletoe (Viscum album), in cancer treatment: prospective nonrandomized and randomized matched-pair studies nested within a cohort study. Altern Ther Health
Huber R, Barth H, Schmitt-Graff A, Klein R. Hypereosinophilia induced by high-dose intratumoral and peritumoral mistletoe application to a patient with pancreatic carcinoma. J Altern Complement Med 2000;6:305-10. PubMed
Timoshenko AV, Cherenkevich SN, Gabius HJ. Viscum album agglutinin-induced aggregation of blood cells and the lectin effects on neutrophil function. Biomed Pharmacother 1995;49:153-8.. PubMed
Bussing A, Regnery A, Schweizer K. Effects of Viscum album L. on cyclophosphamide-treated peripheral blood mononuclear cells in vitro: sister chromatid exchanges and activation/proliferation marker expression. Cancer Lett 1995;94:199-205.. PubMed
Deliorman D, Calis I, Ergun F. A new acyclic monoterpene glucoside from Viscum album ssp. album. Fitoterapia 2001;72:101-5. PubMed
Finall AI, McIntosh SA, Thompson WD. Subcutaneous inflammation mimicking metastatic malignancy induced by injection of mistletoe extract. BMJ 2006;333:1293-4. PubMed
Bauer C, Oppel T, Rueff F, Przybilla B. Anaphylaxis to viscotoxins of mistletoe (Viscum album) extracts. Ann Allergy Asthma Immunol 2005;94:86-9. PubMed
Schoffski P, Breidenbach I, Krauter J, et al. Weekly 24 h infusion of aviscumine (rViscumin): A phase I study in patients with solid tumours. Eur J Cancer 2005;41:1431-8.
Chernyshov VP, Omelchenko LI, Heusser P, and et al. Immunomodulatory actions of Viscum album (Iscador) in children with recurrent respiratory disease as a result of the Chernobyl nuclear accident. Complementary Therapies in Medicine 1997;5(3):141-146. DOI
Chernyshov, V. P., Heusser, P., Omelchenko, L. I., Chernyshova, L. I., Vodyanik, M. A., Vykhovanets, E. V., Galazyuk, L. V., Pochinok, T. V., Gaiday, N. V., Gumenyuk, M. E., Zelinsky, G. M., Schaefermeyer, H., and Schaefermeyer, G. Immunomodulatory and cl
Kim HJ, Kim H, Ahn JH, Suk JH. Liver injury induced by herbal extracts containing mistletoe and kudzu. J Altern Complement Med 2015;21(3):180-5. PubMed
Kienle GS, Grugel R, Kiene H. Safety of higher dosages of Viscum album L. in animals and humans--systematic review of immune changes and safety parameters. BMC Complement Altern Med. 2011 Aug 28;11:72. PubMed
Schad F, Atxner J, Buchwald D, Happe A, Popp S, Kröz M, Matthes H. Intratumoral Mistletoe (Viscum album L) Therapy in Patients With Unresectable Pancreas Carcinoma: A Retrospective Analysis. Integr Cancer Ther. 2014 Jul;13(4):332-40.
Steele ML, Axtner J, Happe A, Kröz M, Matthes H, Schad F. Adverse Drug Reactions and Expected Effects to Therapy with Subcutaneous Mistletoe Extracts (Viscum album L.) in Cancer Patients. Evid Based Complement Alternat Med. 2014;2014:724258.
Steele ML, Axtner J, Happe A, Kröz M, Matthes H, Schad F. Safety of Intravenous Application of Mistletoe (Viscum album L.) Preparations in Oncology: An Observational Study. Evid Based Complement Alternat Med. 2014;2014:236310.
von Schoen-Angerer T, Wilkens J, Kienle GS, Kiene H, Vagedes J. High-Dose Viscum album Extract Treatment in the Prevention of Recurrent Bladder Cancer: A Retrospective Case Series. Perm J. 2015 Fall;19(4):76-83.
Nazaruk J, Orlikowski P. Phytochemical profile and therapeutic potential of Viscum album L. Nat Prod Res. 2016;30(4):373-85.
Bussing A, Stumpf C, Troger W, Schietzel M. Course of mitogen-stimulated T lymphocytes in cancer patients treated with Viscum album extracts. Anticancer Res. 2007 Jul-Aug;27(4C):2903-10.
Noh D, Park JS, Lee DY. Acute respiratory distress syndrome after Viscum album pleurodesis for primary spontaneous pneumothorax. Koren J THorac Cariodvasc Surg. 2017 Feb;50(1):64-67.
Schad F, Axtner J, Kroz M, Matthes H, Steele ML. Safety of combined treatment with monoclonal antibodies and Viscum album L preparations. Integr Cancer Ther. 2018 Mar;17(1):41-51.
Thronicke A, Steele ML, Grah C, Matthes B, Schad F. Clinical safety of combined therapy of immune checkpoint inhibitors and Viscum album L. therapy in patients with advanced or metastatic cancer. BMC Complement Altern Med. 2017 Dec 13;17(1):534. PubMed
Khan T, Ali S, Qayyum R, Hussain I, Wahid F, Shah AJ. Intestinal and vascular smooth muscle relaxant effect of Viscum album explains its medicinal use in hyperactive gut disorders and hypertension. BMC Complement Altern Med. 2016 Jul 27;16:251. PubMed
Cho SJ, Kim SW, Chang JW. Acute pneumonitis consequent on pleurodesis with Viscum album extract: severe chest images but benign clinical course. Multidiscip Respir Med. 2014 Nov 27;9(1):61. PubMed
Steele ML, Axtner J, Happe A, Kroz M, Matthes H, Schad F. Use and safety of intratumoral application of European mistletoe (Visum album L) preparations in oncology. Integr Cancer Ther. 2015 Mar;14(2):140-8.
Zuzak TJ, Wasmuth A, Bernitzki S, Schwermer M, Längler A. Safety of high-dose intravenous mistletoe therapy in pediatric cancer patients: A case series. Complement Ther Med. 2018;40:198-202. PubMed
Kim JD, Choi JW, Park HO, et al. Chemical pleurodesis with Viscum album L. extract for secondary spontaneous pneumothorax in elderly patients. J Thorac Dis 2020;12(10):5440-5445. PubMed
Baek JH, Jeon Y, Han KW, Jung DH, Kim KO. Effect of mistletoe extract on tumor response in neoadjuvant chemoradiotherapy for rectal cancer: a cohort study. World J Surg Oncol 2021;19(1):178. PubMed
Casetti F, Rafei-Shamsabadi D, Müller S. Grade II-anaphylaxis after subcutaneous injection of mistletoe extract. Contact Dermatitis 2021;85(4):462-5.
Cogo E, Elsayed M, Bhardwaj S, et al. Mistletoe Extracts during the Oncological Perioperative Period: A Systematic Review and Meta-Analysis of Human Randomized Controlled Trials. Curr Oncol 2023;30(9):8196-8219. 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 European Mistletoe and Talazoparib Together: Common Questions

Is it safe to take European Mistletoe with Talazoparib?

We do not list a known interaction between European Mistletoe and Talazoparib. 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 European Mistletoe and Talazoparib have any of the same side effects?

Yes — our sources link each of them separately to 8 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.

Are European Mistletoe and Talazoparib used for the same thing?

They overlap in purpose, which usually means the real question is whether you need both rather than whether they are safe together. This page lists the shared uses and how strong the evidence is for European Mistletoe in each. That is a conversation for your prescriber, especially if Talazoparib is being adjusted to a target.

How was the European Mistletoe and Talazoparib combination checked?

Interactions in our licensed database are recorded against drug classes. Talazoparib is filed under 2 classifications, and European Mistletoe has documented interactions with 2 drug classes — none of Talazoparib'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 European Mistletoe interact with any other medications?

Yes. European Mistletoe has 293 documented drug interactions in our database — Talazoparib 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 Talazoparib interact with any supplements?

Yes. Talazoparib has documented interactions with 54 supplements in our database — European Mistletoe is not one of them. The Talazoparib interaction page linked on this page lists every one, ranked by severity.

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

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