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 Paroxetine Paxil Increased risk of QT interval prolongation Details Foscarnet Injection Pasireotide Signifor Increased risk of QT prolongation Details Foscarnet Injection Pazopanib Votrient An increased risk of QT-interval prolongation Details Foscarnet Injection Pentamidine NebuPent Symptomatic and severe hypocalcemia and nephrotoxicity Details Foscarnet Injection Perphenazine Increased risk of QT interval prolongation Details Foscarnet Injection Phenobarbital Fidoquel An increased risk of QT interval prolongation Details Foscarnet Injection Pimavanserin Nuplazid An increased risk of QT interval prolongation Details Foscarnet Injection Pipamperone Increased risk of QT interval prolongation Details Foscarnet Injection Pirmenol An increased risk of cardiotoxicity (QT prolongation, torsades de pointes, cardiac arrest) Details Foscarnet Injection Pitolisant Wakix Increased risk of QT interval prolongation Details Foscarnet Injection Ponesimod Ponvory An increased risk of QT interval prolongation Details Foscarnet Injection Posaconazole Noxafil Increased risk of QT interval prolongation Details Foscarnet Injection Prajmaline An increased risk of cardiotoxicity (QT prolongation, torsades de pointes, cardiac arrest) Details Foscarnet Injection Primidone Mysoline An increased risk of QT interval prolongation Details Foscarnet Injection Procainamide Procan® An increased risk of cardiotoxicity (QT prolongation, torsades de pointes, cardiac arrest) Details Foscarnet Injection Prochlorperazine An increased risk of cardiotoxicity (QT prolongation, torsades de pointes, cardiac arrest) Details Foscarnet Injection Promethazine Phenadoz Increased risk of QT interval prolongation Details Foscarnet Injection Propafenone Rythmol An increased risk of cardiotoxicity (QT prolongation, torsades de pointes, cardiac arrest) Details Foscarnet Injection Protriptyline An increased risk of cardiotoxicity (QT prolongation, torsades de pointes, cardiac arrest) Details Foscarnet Injection Quetiapine Seroquel An increased risk of QT interval prolongation Details Foscarnet Injection Quinidine Cardioquin® An increased risk of cardiotoxicity (QT prolongation, torsades de pointes, cardiac arrest) Details Foscarnet Injection Quinine Increased risk of QT interval prolongation Details Foscarnet Injection Quizartinib Vanflyta An increased risk of QT interval prolongation Details Foscarnet Injection Ranolazine Aspruzyo Increased risk of QT interval prolongation Details Foscarnet Injection Relugolix Orgovyx Increased risk of QT interval prolongation Details Foscarnet Injection Revumenib Revuforj An increased risk of QT interval prolongation Details Foscarnet Injection Ribociclib Kisqali An increased risk of QT interval prolongation Details Foscarnet Injection Rilpivirine Edurant An increased risk of QT interval prolongation and torsade de pointes Details Foscarnet Injection Risperidone Perseris An increased risk of cardiotoxicity (QT prolongation, torsade de pointes, cardiac arrest) Details Foscarnet Injection Ritonavir Norvir Increased risk of QT interval prolongation Details Foscarnet Injection Selpercatinib Retevmo Increased risk of QT interval prolongation Details Foscarnet Injection Sematilide An increased risk of cardiotoxicity (QT prolongation, torsades de pointes, cardiac arrest) Details Foscarnet Injection Sertindole An increased risk of cardiotoxicity (QT prolongation, torsade de pointes, cardiac arrest) Details Foscarnet Injection Sertraline An increased risk of QT interval prolongation Details Foscarnet Injection Sevoflurane Petrem Increased risk of QT interval prolongation Details Foscarnet Injection Siponimod Mayzent An increased risk of QT interval prolongation Details Foscarnet Injection Sisomicin Nephrotoxicity Details Foscarnet Injection Sodium Phosphate OsmoPrep Increased risk of QT interval prolongation Details Foscarnet Injection Sodium Phosphate, Dibasic Increased risk of QT interval prolongation Details Foscarnet Injection Sodium Phosphate, Monobasic 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.