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 →

Dr. Brian Staiger, PharmD, BCPS
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 Clozapine Clozaril Increased risk of QT interval prolongation Details Foscarnet Injection Crizotinib Xalkori An increased risk of QT interval prolongation Details Foscarnet Injection Cyclobenzaprine Amrix Increased risk of QT interval prolongation Details Foscarnet Injection Cyclosporine Atopica Nephrotoxicity Details Foscarnet Injection Dabrafenib Tafinlar An increased risk of QT interval prolongation Details Foscarnet Injection Dasatinib Phyrago Increased risk of QT interval prolongation Details Foscarnet Injection Degarelix Firmagon Increased risk of QT interval prolongation Details Foscarnet Injection Delamanid Increased risk of QT interval prolongation Details Foscarnet Injection Desflurane Suprane An increased risk of QT interval prolongation Details Foscarnet Injection Desipramine Norpramin An increased risk of cardiotoxicity (QT prolongation, torsades de pointes, cardiac arrest) Details Foscarnet Injection Deutetrabenazine Austedo An increased risk of QT interval prolongation Details Foscarnet Injection Dexmedetomidine Dexased Increased risk of cardiac arrhythmias Details Foscarnet Injection Dibekacin Nephrotoxicity Details Foscarnet Injection Dibenzepin An increased risk of cardiotoxicity (QT prolongation, torsades de pointes, cardiac arrest) Details Foscarnet Injection Disopyramide Norpace An increased risk of cardiotoxicity (QT prolongation, torsades de pointes, cardiac arrest) Details Foscarnet Injection Dofetilide Tikosyn An increased risk of cardiotoxicity (QT prolongation, torsades de pointes, cardiac arrest) Details Foscarnet Injection Dolasetron Anzemet An increased risk of cardiotoxicity (QT prolongation, torsades de pointes, cardiac arrest) Details Foscarnet Injection Domperidone Increased risk of QT interval prolongation Details Foscarnet Injection Donepezil Adlarity Increased risk of QT-interval prolongation and torsade de pointes Details Foscarnet Injection Dordaviprone An increased risk of QT interval prolongation Details Foscarnet Injection Doxepin Prudoxin An increased risk of cardiotoxicity (QT prolongation, torsades de pointes, cardiac arrest) Details Foscarnet Injection Droperidol An increased risk of QT interval prolongation Details Foscarnet Injection Ebastine Increased risk of QT interval prolongation Details Foscarnet Injection Efavirenz An increased risk of QT interval prolongation Details Foscarnet Injection Encainide An increased risk of cardiotoxicity (QT prolongation, torsades de pointes, cardiac arrest) Details Foscarnet Injection Encorafenib Braftovi Increased risk of QT interval prolongation Details Foscarnet Injection Enflurane An increased risk of cardiotoxicity (QT prolongation, torsades de pointes, cardiac arrest) Details Foscarnet Injection Entrectinib Rozlytrek An increased risk of QT interval prolongation Details Foscarnet Injection Eribulin Halaven Increased risk of QT interval prolongation Details Foscarnet Injection Erythromycin Erythrocin Stearate Increased risk of QT interval prolongation Details Foscarnet Injection Escitalopram Lexapro An increased risk of QT interval prolongation Details Foscarnet Injection Ethacrynic Acid Edecrin Impaired foscarnet elimination and potential for toxicity Details Foscarnet Injection Etrasimod Velsipity Increased risk of transient reduction in heart rate, AV conduction, QT interval prolongation and an increased risk of torsade de p... Details Foscarnet Injection Famotidine Calmicid Increased risk of QT interval prolongation Details Foscarnet Injection Felbamate Felbatol Increased risk of QT interval prolongation Details Foscarnet Injection Fexinidazole An increased risk of QT interval prolongation Details Foscarnet Injection Fingolimod Gilenya Increased risk of QT interval prolongation Details Foscarnet Injection Flecainide Tambocor® An increased risk of cardiotoxicity (QT prolongation, torsades de pointes, cardiac arrest) Details Foscarnet Injection Fluconazole Diflucan An increased risk of QT interval prolongation Details Foscarnet Injection Fluoxetine RECONCILE An increased risk of QT interval prolongation and an increased risk of torsades de pointes 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.