What brand name is Acyclovir marketed under?

Acyclovir is primarily marketed under the brand name Zovirax. This antiviral medication is widely used for the treatment of infections caused by certain types of viruses, particularly herpes simplex virus infections, including genital herpes, cold sores, and shingles. Zovirax is recognized for its efficacy in reducing the severity and duration of these viral outbreaks.

The other choices do not represent commonly recognized or established brand names for Acyclovir. Acyclovir 50 is not a recognized brand name but rather a reference to its formulation or dosage. Herplex and Virirax are either misspellings or less common names and do not have the same widespread recognition or approval as Zovirax. Therefore, Zovirax stands out as the legitimate and widely accepted brand under which Acyclovir is marketed.