<prompt> Nevirapine is -NRTINNRTIE-TIFI  <response>: Ans is b i.e., NNRTI o Nevirapine is NNRTIThese drugs inhibit reverse transcriptase by acting at a site allosteric site different from NRTIs.These are selective for HIV-1 and have no activity against HIV-2.Resistance to these drugs develops very rapidly.o NNRI drug groupEfavirenz, nevirapine, etravirtue and delavirdine,o Mechanism of action :These are nucleotide unrelated compounds which directly inhibit HIV reverse transcriptase without the need for intracellular phosphory-lation.Adverse effectsRashes Steven Johnson Syndrome Toxic epidermal necrolysisNauseaHeadach, FeverRise in live enzyme hepatotoxico Nevirapine is used in pregnancy to prevent vertical transmission.o It decrease transmission to 13 as compared to 21.5 by zidovudine.o NNRTI donot cause lipodystrophy like NRTIs and RTIs Nevirapine and efavirenz are enzyme inducers and delaviridine is enzyme inhibitor. 