Comparative Pharmacology
Head-to-head clinical analysis: CIDOFOVIR versus DENDRID.
Peer-Reviewed Evidence
Head-to-head clinical analysis: CIDOFOVIR versus DENDRID.
CIDOFOVIR vs DENDRID
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.
Dendrid (idoxuridine) is a pyrimidine nucleoside analog that inhibits viral DNA replication by incorporating into viral DNA and inhibiting thymidylate synthetase, thereby blocking DNA synthesis.
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.
1.5 mg/kg IV every 8 hours; typical adult dose 100 mg IV every 8 hours.
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.
Terminal elimination half-life is approximately 3-4 hours in adults with normal renal function; prolonged in renal impairment
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%).
Primarily renal excretion; unchanged drug accounts for 70-90% of elimination; minor biliary/fecal excretion (<10%)
Category D/X
Category C
Antiviral
Antiviral