famciclovir

noun
fam·ci·clo·vir | \ˌfam-ˈsī-klō-ˌvir \

Medical Definition of famciclovir 

: a precursor C14H19N5O4 of the antiviral agent penciclovir that after oral administration is converted to penciclovir by cellular kinases and that is used especially to treat shingles and herpes genitalis — see famvir

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