<unk>  is a nucleoside analog of thymidine. It is phosphorylated by cellular kinases into an active triphosphate.<unk>  triphosphate inhibits HIV's reverse transcriptase by competing with the natural substrate, thymidine triphosphate. Reverse transcriptase is the enzyme the virus uses to make a DNA copy of its RNA in order to insert its genetic material into the host's DNA. Upon incorporation into the DNA strand,<unk>  triphosphate causes termination of DNA replication.
Stavudine
Lamivudine
Censavudine
Saquinavir
Telbivudine
Sorivudine
Fostemsavir
Brivudine