Toremifene

62 interactions 4 explained in plain English

Also sold as: Fareston Fareston®

About Toremifene

Toremifene is used to treat breast cancer that has spread to other parts of the body in women who have experienced menopause ('change of life'; end of monthly menstrual periods). Toremifene is in a class of medications called nonsteroidal antiestrogens. It works by blocking the activity of estrogen (a female hormone) i… Read the full Toremifene drug information page →

Medically reviewed by Dr. Brian Staiger, PharmD, BCPS · Updated Jun 30, 2026 · Editorial policy · Data sources

Sources: FDA prescribing information (Structured Product Labeling), the published literature cited in each entry, DDInter 2.0 (a major open-access drug-interaction database), and legacy DrugBank interaction data distributed by the NIH's RxNav service (decommissioned in 2024) — analyzed and reviewed by our pharmacist team. How we build this library →

Most serious with: Ketoconazole Topical Eribulin Injection Ivabradine Oxaliplatin Injection Amisulpride Injection Ofloxacin

1 Contraindicated 61 Major

All (62) Contraindicated (1) Major (61)

Contraindicated

Toremifene Ketoconazole Topical Extina® Foam Increased toremifene exposure and an increased risk of QT interval prolongation, ventricular tachycardia or torsade de pointes Details

Major

Toremifene Amitriptyline Elavil Explained An increased risk of QT interval prolongation, ventricular tachycardia or an increased risk of torsade de pointes Details Toremifene Sertraline Explained An increased risk of QT interval prolongation Details Toremifene Buprenorphine Belbuca Explained An increased risk of QT interval prolongation Details Toremifene Relugolix Orgovyx Explained Increased risk of QT interval prolongation Details Toremifene Amisulpride Injection Barhemsys Increased risk of serious ventricular arrhythmias such as torsades de pointes Details Toremifene Arsenic Trioxide Trisenox An increased risk of QT interval prolongation, ventricular tachycardia or an increased risk of torsade de pointes Details Toremifene Aripiprazole Injection Abilify An increased risk of QT interval prolongation Details Toremifene Arsenic Trioxide Injection Trisenox An increased risk of QT interval prolongation, ventricular tachycardia or an increased risk of torsade de pointes Details Toremifene Asenapine Transdermal Patch Secuado Increased risk of QT interval prolongation Details Toremifene Azithromycin AzaSite An increased risk of QT interval prolongation, ventricular tachycardia or an increased risk of torsade de pointes Details Toremifene Alfuzosin UroXatral An increased risk of QT interval prolongation, ventricular tachycardia or torsade de pointes Details Toremifene Anagrelide Agrylin Increased risk of QT interval prolongation Details Toremifene Bedaquiline Sirturo Increased risk of QT interval prolongation Details Toremifene Chloroquine Aralen® An increased risk of QT interval prolongation, ventricular tachycardia or an increased risk of torsade de pointes Details Toremifene Dasatinib Phyrago An increased risk of QT interval prolongation Details Toremifene Degarelix Injection Firmagon Increased risk of QT interval prolongation Details Toremifene Deutetrabenazine Austedo An increased risk of QT interval prolongation Details Toremifene Disopyramide Norpace An increased risk of QT interval prolongation, ventricular tachycardia or an increased risk of torsade de pointes Details Toremifene Dofetilide Tikosyn An increased risk of QT interval prolongation, ventricular tachycardia or an increased risk of torsade de pointes Details Toremifene Dolasetron Anzemet An increased risk of QT interval prolongation, ventricular tachycardia or an increased risk of torsade de pointes Details Toremifene Dolasetron Injection Anzemet An increased risk of QT interval prolongation, ventricular tachycardia or an increased risk of torsade de pointes Details Toremifene Encorafenib Braftovi Increased risk of QT interval prolongation Details Toremifene Entrectinib Rozlytrek An increased risk of QT interval prolongation Details Toremifene Eribulin Injection Halaven An increased risk of QT interval prolongation, ventricular tachycardia or an increased risk of torsade de pointes Details Toremifene Famotidine Calmicid An increased risk of QT interval prolongation, ventricular tachycardia or an increased risk of torsade de pointes Details Toremifene Famotidine Injection Calmicid An increased risk of QT interval prolongation, ventricular tachycardia or an increased risk of torsade de pointes Details Toremifene Felbamate Felbatol An increased risk of QT interval prolongation, ventricular tachycardia or an increased risk of torsade de pointes Details Toremifene Flecainide Tambocor® An increased risk of QT interval prolongation, ventricular tachycardia or an increased risk of torsade de pointes Details Toremifene Foscarnet Injection Foscavir Increased risk of QT interval prolongation Details Toremifene Fostemsavir Rukobia Increased risk of torsade de pointes Details Toremifene Galantamine Razadyne An increased risk of QT interval prolongation, ventricular tachycardia or an increased risk of torsade de pointes Details Toremifene Gatifloxacin Ophthalmic Zymar® An increased risk of QT interval prolongation, ventricular tachycardia or an increased risk of torsade de pointes Details Toremifene Gemifloxacin Factive An increased risk of QT interval prolongation, ventricular tachycardia or an increased risk of torsade de pointes Details Toremifene Glasdegib Daurismo Increased risk of QT interval prolongation Details Toremifene Goserelin Implant Zoladex Increased risk of QT interval prolongation Details Toremifene Granisetron Transdermal Patch Sancuso An increased risk of QT interval prolongation, ventricular tachycardia or an increased risk of torsade de pointes Details Toremifene Granisetron Injection Granisol An increased risk of QT interval prolongation, ventricular tachycardia or an increased risk of torsade de pointes Details Toremifene Histrelin Implant Supprelin Increased risk of QT interval prolongation Details Toremifene Hydroxychloroquine Plaquenil Increased risk of QT interval prolongation Details

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Educational information only, not medical advice. Always confirm interactions with your pharmacist or prescriber before making any change to your medications.