Foscarnet Injection

259 interactions 371 cited references

Also sold as: Foscavir Foscavir®

About Foscarnet Injection

Foscarnet injection is used alone or with ganciclovir (Cytovene) to treat cytomegalovirus (CMV) retinitis (an eye infection that can cause blindness) in people who have human immunodeficiency virus (HIV) infection. Foscarnet injection is also used to treat herpes simplex virus (HSV) infections of the skin and mucous me… Read the full Foscarnet Injection drug information page →

Medically reviewed by Dr. Brian Staiger, PharmD, BCPS · Updated Aug 9, 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: Dronedarone Cisapride Levoketoconazole Levomethadyl Mesoridazine Pimozide

15 Contraindicated 244 Major

All (259) Contraindicated (15) Major (244)

Major

Foscarnet Injection Formoterol Perforomist Increased risk of QT interval prolongation Details Foscarnet Injection Fosfomycin Contepo An increased risk of QT interval prolongation Details Foscarnet Injection Fosphenytoin Cerebyx Increased risk of QT interval prolongation Details Foscarnet Injection Fostemsavir Rukobia Increased risk of torsade de pointes Details Foscarnet Injection Framycetin Nephrotoxicity Details Foscarnet Injection Furosemide Disal Impaired foscarnet elimination and potential for toxicity Details Foscarnet Injection Galantamine Razadyne Increased risk of QT interval prolongation Details Foscarnet Injection Gatifloxacin Zymaxid Increased risk of QT interval prolongation Details Foscarnet Injection Gemifloxacin Factive An increased risk of cardiotoxicity (QT prolongation, torsades de pointes, cardiac arrest) Details Foscarnet Injection Gentamicin Nephrotoxicity Details Foscarnet Injection Gepirone Exxua An increased risk of QT interval prolongation and cardiac arrhythmias Details Foscarnet Injection Gepotidacin Blujepa An increased risk of QT interval prolongation Details Foscarnet Injection Givinostat Duvyzat Increased risk of QT interval prolongation and torsade de pointes Details Foscarnet Injection Glasdegib Daurismo Increased risk of QT interval prolongation Details Foscarnet Injection Goserelin Increased risk of QT interval prolongation Details Foscarnet Injection Granisetron Increased risk of QT interval prolongation Details Foscarnet Injection Halofantrine An increased risk of cardiotoxicity (QT prolongation, torsades de pointes, cardiac arrest) Details Foscarnet Injection Haloperidol An increased risk of cardiotoxicity (QT prolongation, torsade de pointes, cardiac arrest) Details Foscarnet Injection Halothane An increased risk of cardiotoxicity (QT prolongation, torsades de pointes, cardiac arrest) Details Foscarnet Injection Histrelin Supprelin Increased risk of QT interval prolongation Details Foscarnet Injection Hydroquinidine An increased risk of cardiotoxicity (QT prolongation, torsades de pointes, cardiac arrest) Details Foscarnet Injection Hydroxychloroquine Plaquenil An increased risk of seizures and an increased risk of QT interval prolongation Details Foscarnet Injection Hydroxyzine An increased risk of QT interval prolongation Details Foscarnet Injection Ibutilide Corvert An increased risk of cardiotoxicity (QT prolongation, torsades de pointes, cardiac arrest) Details Foscarnet Injection Iloperidone Fanapt Increased risk of QT interval prolongation Details Foscarnet Injection Imipramine An increased risk of cardiotoxicity (QT prolongation, torsades de pointes, cardiac arrest) Details Foscarnet Injection Inotuzumab Ozogamicin Besponsa Increased risk of QT interval prolongation Details Foscarnet Injection Isepamicin Nephrotoxicity Details Foscarnet Injection Isoflurane Fluriso An increased risk of QT prolongation and torsades de pointes Details Foscarnet Injection Isradipine DynaCirc® An increased risk of cardiotoxicity (QT prolongation, torsades de pointes, cardiac arrest) Details Foscarnet Injection Itraconazole Sporanox Increased risk of QT interval prolongation Details Foscarnet Injection Ivabradine Corlanor Increased risk of QT prolongation Details Foscarnet Injection Ivosidenib Tibsovo An increased risk of QT interval prolongation Details Foscarnet Injection Kanamycin Nephrotoxicity Details Foscarnet Injection Ketoconazole Extina Increased risk of QT interval prolongation Details Foscarnet Injection Lapatinib Tykerb Increased risk of QT interval prolongation Details Foscarnet Injection Lefamulin Xenleta Increased risk of QT interval prolongation Details Foscarnet Injection Lenvatinib Lenvima Increased risk of QT-interval prolongation Details Foscarnet Injection Leuprolide Eligard Increased risk of QT interval prolongation Details Foscarnet Injection Levofloxacin Levaquin 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.