Hydroquinidine

Name: Hydroquinidine Drug Interactions
Creator: Dr. Brian Staiger, PharmD, BCPS

51 interactions 3 explained in plain English

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: Disopyramide Olodaterol Oral Inhalation Deutetrabenazine Fostemsavir Oxaliplatin Injection Dolasetron Injection

51 Major

All (51) Major (51)

Major

Hydroquinidine Metronidazole Flagyl An increased risk of QT interval prolongation Details Hydroquinidine Metronidazole Injection Flagyl An increased risk of QT interval prolongation Details Hydroquinidine Metronidazole Topical MetroCream® An increased risk of QT interval prolongation Details Hydroquinidine Metronidazole Vaginal MetroGel® Vaginal An increased risk of QT interval prolongation Details Hydroquinidine Moxifloxacin Avelox Increased risk of QT interval prolongation Details Hydroquinidine Moxifloxacin Injection Avelox Increased risk of QT interval prolongation Details Hydroquinidine Moxifloxacin Ophthalmic Moxeza® Increased risk of QT interval prolongation Details Hydroquinidine Octreotide Bynfezia An increased risk of cardiotoxicity (QT prolongation, torsades de pointes, cardiac arrest) Details Hydroquinidine Octreotide Injection Bynfezia An increased risk of cardiotoxicity (QT prolongation, torsades de pointes, cardiac arrest) Details Hydroquinidine Olodaterol Oral Inhalation Striverdi An increased risk of QT interval prolongation and an increased risk of ventricular arrhythmias Details Hydroquinidine Oxaliplatin Injection Eloxatin® 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.