Comparative Pharmacology
Head-to-head clinical analysis: ACYCLOVIR versus XOFLUZA.
Peer-Reviewed Evidence
Head-to-head clinical analysis: ACYCLOVIR versus XOFLUZA.
ACYCLOVIR vs XOFLUZA
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Acyclovir is a synthetic nucleoside analog that inhibits viral DNA replication. It is phosphorylated to acyclovir monophosphate by viral thymidine kinase, then converted to acyclovir triphosphate by cellular kinases. Acyclovir triphosphate competes with deoxyguanosine triphosphate for viral DNA polymerase, incorporating into viral DNA and causing chain termination.
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.
400 mg orally twice daily for herpes zoster; 200 mg orally 5 times daily for genital herpes; 5-10 mg/kg intravenously every 8 hours for severe infections.
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
moderateAcyclovir + Teriflunomide
"The serum concentration of Teriflunomide can be increased when it is combined with Acyclovir."
Clinical Note
moderateTizanidine + Acyclovir
"The serum concentration of Acyclovir can be increased when it is combined with Tizanidine."
Terminal elimination half-life is 2.5–3.3 hours in adults with normal renal function; increases to 19.5 hours in anuria.
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 62-90% of elimination. Fecal elimination is <2%.
Baloxavir marboxil is primarily excreted via feces (80.1%) and urine (14.7%) after oral administration, with <1% as unchanged drug in urine.
Category A/B
Category C
Antiviral
Antiviral