This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Virology, Subject name: Microbiology
Treatment of Herpes zoster: 
Select and explain. 
A. Zidovudin, B. Valacyclovir, C. Ribavarin, D. Nevirapine
B: Valacyclovir
Answer: B: Valacyclovir 
Explanation: Ans. is 'b' i.e., Valacyclovir (Ref: Jawetz, 27th/e, p. 470)* Famciclovir or valacyclovir are the DOC for Herpes Zoster.* Several antiviral compounds provide effective therapy for varicella, including acyclovir, valacyclovir, famciclovir and foscarnet. Acyclovir can prevent the development of systemic disease in varicella - infected immunosuppressed patients and can halt the progression of herpes zoster in adults. Acyclovir does not appear to prevent postherpetic neuralgia.