Comparative Pharmacology
Head-to-head clinical analysis: CIDOFOVIR versus XOFLUZA.
Peer-Reviewed Evidence
Head-to-head clinical analysis: CIDOFOVIR versus XOFLUZA.
CIDOFOVIR vs XOFLUZA
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Cidofovir is a nucleotide analog that inhibits viral DNA polymerase by competing with deoxycytidine triphosphate for incorporation into viral DNA, resulting in chain termination and inhibition of viral replication.
Baloxavir marboxil is a prodrug that is converted to baloxavir acid, which inhibits the cap-dependent endonuclease activity of the influenza virus polymerase acidic protein, thereby preventing viral mRNA transcription and replication.
5 mg/kg intravenously once weekly for 2 weeks, then 5 mg/kg every 2 weeks. Administer with probenecid 2 g orally 3 hours before dose, then 1 g at 2 and 8 hours after dose. Hydrate with 1 L normal saline before infusion.
40 mg orally once as a single dose; for patients weighing ≥80 kg, 80 mg orally once as a single dose.
None Documented
None Documented
Clinical Note
moderateCidofovir + Teriflunomide
"The serum concentration of Teriflunomide can be increased when it is combined with Cidofovir."
Clinical Note
moderateTenofovir disoproxil + Cidofovir
"Tenofovir disoproxil may decrease the excretion rate of Cidofovir which could result in a higher serum level."
Terminal elimination half-life is approximately 2.5 hours. However, the intracellular half-life of the active diphosphate metabolite is >48 hours, supporting once-weekly dosing.
The terminal elimination half-life of baloxavir marboxil is approximately 79.1 hours (range 53–107 hours), supporting single-dose therapy for influenza.
Renal excretion of unchanged drug via glomerular filtration and tubular secretion accounts for approximately 90% of the administered dose. Biliary/fecal elimination is minimal (<5%).
Baloxavir marboxil is primarily excreted via feces (80.1%) and urine (14.7%) after oral administration, with <1% as unchanged drug in urine.
Category D/X
Category C
Antiviral
Antiviral