adefovir

noun
adef·​o·​vir | \ ə-ˈde-fə-ˌvir How to pronounce adefovir (audio) \
variants: or adefovir dipivoxil \ -​ˌdī-​pə-​ˈväk-​səl How to pronounce adefovir dipivoxil (audio) \

Medical Definition of adefovir

: an antiviral drug that is taken orally in the form of its diester C20H32N5O8P in the treatment of hepatitis B Adefovir is very effective in lamivudine-resistant HBV infection.— Jules L. Dienstag, The New England Journal of Medicine, 2 Oct. 2008 Current treatment options for chronic hepatitis include interferon, given by injection, and two drugs administered orally, lamivudine and adefovir dipivoxil.The Baltimore (Maryland) Sun, 1 Apr. 2005

Note: Adefovir is a nucleotide analog acting against hepatitis B virus by inhibiting reverse transcriptase. It is marketed under the trademark Hepsera.