valacyclovir

noun
val·​a·​cy·​clo·​vir | \ ˌval-ə-ˈsī-klō-ˌvir How to pronounce valacyclovir (audio) \

Medical Definition of valacyclovir

: a prodrug of acyclovir that is administered orally in the form of its hydrochloride C13H20N6O4·HCl to treat shingles, genital herpes, and cold sores — see valtrex