A 5-gram tube of Zovirax cream runs more than $200. A month’s supply of valacyclovir (500 milligrams) tablets costs between ...

QUESTION: I used Zovirax ointment for two decades while I had employer-funded insurance. Once I went on Medicare, I learned ...

A: The first antiviral drug developed for herpes simplex infections was Zovirax (acyclovir). It was first approved in 1982 as a topical cream to treat cold sores. Oral tablets also became ...