Foscarnet

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Information about Foscarnet[edit source]

Foscarnet a simple pyrophosphate molecule which has antiviral activity against many viruses and is used intravenously in therapy of serious cytomegalovirus infections, largely in immunocompromised patients. Foscarnet has been associated with mild-to-moderate serum aminotransferase elevations during intravenous therapy, but not with episodes of clinically apparent liver injury.

Mechanism of action of Foscarnet[edit source]

Foscarnet (fos kar' net) is a pyrophosphate (phosphonoformate) that has antiviral activity against several DNA viruses, including cytomegalovirus (CMV) and hepatitis B virus. Foscarnet appears to act by inhibition of the pyrophosphate binding sites of viral DNA polymerases. Foscarnet is poorly absorbed orally and must be given intravenously.

FDA approval information for Foscarnet[edit source]

Foscarnet was approved for use in the United States in 1991, but has had limited use.


Current indications include therapy of CMV retinitis and acyclovir-resistant herpes simplex infections in immunocompromised individuals. Foscarnet is available as an intravenous formulation of 24 mg/mL generically and previously under the brand name of Foscavir. The recommended dose in adults is 40 to 60 mg/kg intravenously every 8 to 12 hours for 2 to 4 weeks, which must be carefully monitored and dose adjusted for renal insufficiency. Side effects include headache, dizziness, confusion, fever, fatigue, abdominal pain, bone marrow suppression, renal dysfunction and rash. Uncommon but potentially severe adverse events include renal failure, seizures, hypersensitivity reactions, Stevens Johnson syndrome and rhabdomyolysis. Drugs for HIV Infection, in the Subclass Antiretroviral Agents

Drugs for Hepatitis B

Drugs for Hepatitis C

HCV NS5A Inhibitors

HCV NS5B Inhibitors (Polymerase inhibitors)

HCV Protease Inhibitors

Combination Therapies

Drugs for Herpes Virus

Acyclovir, Cidofovir, Famciclovir, Foscarnet, Ganciclovir, Valacyclovir, Valganciclovir

Drugs for Influenza

Foscarnet Resources
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