nevirapine UK /nɪˈvʌɪ.ɹə.piːn/US /nəˈvɪɹ.əˌpin/ noun1 •An antiretroviral drug C₁₅H₁₄N₄O structurally related to the benzodiazepines that inhibits reverse transcriptase and is administered orally in combination with at least one other antiretroviral to treat HIV-1 infection.