Thioridazine

117 interactions 6 explained in plain English
Dr. Brian Staiger, PharmD, BCPS
Medically reviewed by Dr. Brian Staiger, PharmD, BCPS · Updated Jul 4, 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: Dasatinib Eribulin Injection Sertraline Felbamate Oxaliplatin Injection Amisulpride Injection
64 Contraindicated 49 Major 4 Moderate
All (117) Contraindicated (64) Major (49) Moderate (4)

Contraindicated

Thioridazine Ketoconazole Topical Extina® Foam An increased risk of QT interval prolongation Details Thioridazine Lefamulin Xenleta Reduced lefamulin exposure, reduced efficacy of lefamulin and an increased risk of QT interval prolongation Details Thioridazine Lenvatinib Lenvima An increased risk of QT interval prolongation Details Thioridazine Levofloxacin Levaquin An increased risk of QT interval prolongation Details Thioridazine Levofloxacin Injection Levaquin An increased risk of QT interval prolongation Details Thioridazine Loperamide Diamode An increased risk of QT interval prolongation Details Thioridazine Mefloquine Lariam® An increased risk of QT interval prolongation Details Thioridazine Metoclopramide Injection Gimoti An increased risk of extrapyramidal reactions and neuroleptic malignant syndrome Details Thioridazine Metoclopramide Nasal Spray Gimoti An increased risk of extrapyramidal reactions and neuroleptic malignant syndrome Details Thioridazine Metronidazole Flagyl An increased risk of QT interval prolongation Details Thioridazine Metronidazole Injection Flagyl An increased risk of QT interval prolongation Details Thioridazine Metronidazole Topical MetroCream® An increased risk of QT interval prolongation Details Thioridazine Metronidazole Vaginal MetroGel® Vaginal An increased risk of QT interval prolongation Details Thioridazine Moxifloxacin Avelox An increased risk of QT interval prolongation Details Thioridazine Moxifloxacin Injection Avelox An increased risk of QT interval prolongation Details Thioridazine Moxifloxacin Ophthalmic Moxeza® An increased risk of QT interval prolongation Details Thioridazine Nafarelin Nasal Spray Synarel An increased risk of QT interval prolongation Details Thioridazine Octreotide Bynfezia An increased risk of QT interval prolongation Details Thioridazine Octreotide Injection Bynfezia An increased risk of QT interval prolongation Details Thioridazine Ofloxacin Floxin® An increased risk of QT interval prolongation Details Thioridazine Ofloxacin Ophthalmic Ocuflox An increased risk of QT interval prolongation Details Thioridazine Ofloxacin Otic Floxin® Otic An increased risk of QT interval prolongation Details Thioridazine Olodaterol Oral Inhalation Striverdi An increased risk of QT interval prolongation Details Thioridazine Oxaliplatin Injection Eloxatin® An 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.