Which of the following agents is NOT used to treat Herpes infections?

Which of the following agents is NOT used to treat Herpes infections?

• A. Trifluridine
• B. Ganciclovir
• C. Ribavirin
• D. Valacyclovir

Answer: (C)

Herpes infections are treated with antiviral nucleoside analogs that get activated inside infected cells by viral kinases and then inhibit viral DNA synthesis. Among the options, all except ribavirin fit that pattern. Trifluridine is used as a topical treatment for ocular herpes; it’s a nucleoside analog activated in HSV-infected cells and interferes with DNA replication in the eye. Ganciclovir is a guanosine analog used for CMV and also active against HSV, especially in impaired immunity. Valacyclovir is an oral prodrug of acyclovir, providing effective HSV therapy by delivering the same active drug systemically. Ribavirin, however, has a different mechanism and spectrum: it inhibits RNA synthesis and GTP synthesis in a range of viruses and is not used for treating herpes infections due to limited efficacy and toxicity concerns. It’s mainly used for RSV, certain hemorrhagic fevers, and hepatitis C in specific regimens.

Herpes infections are treated with antiviral nucleoside analogs that get activated inside infected cells by viral kinases and then inhibit viral DNA synthesis. Among the options, all except ribavirin fit that pattern.

Trifluridine is used as a topical treatment for ocular herpes; it’s a nucleoside analog activated in HSV-infected cells and interferes with DNA replication in the eye. Ganciclovir is a guanosine analog used for CMV and also active against HSV, especially in impaired immunity. Valacyclovir is an oral prodrug of acyclovir, providing effective HSV therapy by delivering the same active drug systemically. Ribavirin, however, has a different mechanism and spectrum: it inhibits RNA synthesis and GTP synthesis in a range of viruses and is not used for treating herpes infections due to limited efficacy and toxicity concerns. It’s mainly used for RSV, certain hemorrhagic fevers, and hepatitis C in specific regimens.