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