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 Solifenacin Vesicare Increased risk of QT interval prolongation Details Foscarnet Injection Sorafenib Nexavar Increased risk of QT interval prolongation Details Foscarnet Injection Sotalol Betapace An increased risk of cardiotoxicity (QT prolongation, torsades de pointes, cardiac arrest) Details Foscarnet Injection Spectinomycin Nephrotoxicity Details Foscarnet Injection Spiramycin An increased risk of cardiotoxicity (QT prolongation, torsades de pointes, cardiac arrest) Details Foscarnet Injection Streptomycin Nephrotoxicity Details Foscarnet Injection Sulfamethoxazole Sustain An increased risk of cardiotoxicity (QT prolongation, torsades de pointes, cardiac arrest) Details Foscarnet Injection Sulpiride An increased risk of QT interval prolongation Details Foscarnet Injection Sultopride An increased risk of cardiotoxicity (QT prolongation, torsade de pointes, cardiac arrest) Details Foscarnet Injection Sunitinib Sutent Increased risk of QT interval prolongation Details Foscarnet Injection Tacrolimus Astagraf An increased risk of QT interval prolongation Details Foscarnet Injection Taletrectinib Ibtrozi Increased risk of QT interval prolongation and torsade de pointes Details Foscarnet Injection Tamoxifen Nolvadex® Increased risk of QT interval prolongation Details Foscarnet Injection Tedisamil An increased risk of cardiotoxicity (QT prolongation, torsades de pointes, cardiac arrest) Details Foscarnet Injection Telaprevir Increased risk of QT interval prolongation Details Foscarnet Injection Telavancin Vibativ Increased risk of QT interval prolongation Details Foscarnet Injection Telithromycin An increased risk of cardiotoxicity (QT prolongation, torsades de pointes, cardiac arrest) Details Foscarnet Injection Tetrabenazine Xenazine Increased risk of QT interval prolongation Details Foscarnet Injection Tobramycin Bethkis Nephrotoxicity Details Foscarnet Injection Tolterodine Detrol Increased risk of QT interval prolongation Details Foscarnet Injection Toremifene Fareston Increased risk of QT interval prolongation Details Foscarnet Injection Torsemide Soaanz Impaired foscarnet elimination and potential for toxicity Details Foscarnet Injection Tramadol ConZip An increased risk of seizure Details Foscarnet Injection Trazodone Raldesy Increased risk of QT interval prolongation Details Foscarnet Injection Triclabendazole Egaten An increased risk of QT interval prolongation Details Foscarnet Injection Trifluoperazine An increased risk of cardiotoxicity (QT prolongation, torsades de pointes, cardiac arrest) Details Foscarnet Injection Trimethoprim Primsol An increased risk of cardiotoxicity (QT prolongation, torsades de pointes, cardiac arrest) Details Foscarnet Injection Trimipramine An increased risk of cardiotoxicity (QT prolongation, torsades de pointes, cardiac arrest) Details Foscarnet Injection Triptorelin Increased risk of QT interval prolongation Details Foscarnet Injection Valacyclovir Valtrex Nephrotoxicity Details Foscarnet Injection Vandetanib Caprelsa Increased risk of QT-interval prolongation Details Foscarnet Injection Vardenafil Levitra Increased risk of QT interval prolongation Details Foscarnet Injection Vemurafenib Zelboraf Increased risk of QT interval prolongation Details Foscarnet Injection Venlafaxine Increased risk of QT interval prolongation Details Foscarnet Injection Vepdegestrant Veppanu An increased risk of QT interval prolongation and an increased risk of torsade de pointes, polymorphic ventricular tachycardia, ot... Details Foscarnet Injection Vilanterol Increased risk of QT interval prolongation Details Foscarnet Injection Vinflunine Increased risk of QT-interval prolongation Details Foscarnet Injection Voclosporin Lupkynis An increased risk of QT interval prolongation Details Foscarnet Injection Voriconazole Vfend Increased risk of QT interval prolongation Details Foscarnet Injection Vorinostat Zolinza Increased risk of QT interval prolongation Details

Check another drug

Still have questions about this combination?

Every question gets a real answer from a licensed pharmacist — free, and usually within a day.

Ask the pharmacist

Educational information only, not medical advice. Always confirm interactions with your pharmacist or prescriber before making any change to your medications.