Stavudine is a dideoxynucleoside analog that inhibits reverse transcrip- tase & has in vitro activity against hiv. Stavudine is a human immuno- deficiency virus nucleoside analog reverse transcriptase inhibitor. The mechanism of action of stavudine is as a nucleoside reverses transcrip- tase inhibitor. The chemical classification of stavudine is nucleoside analog. Stavudine is a nucleoside reverse transcriptase inhibitor analog of thymidine. Stavudine has been recommended to undergo phase-out management due to its long-term, irreversible side-effects.