I humane in vivo- studier og in vitro- studier med humane levermikrosomer har vist, at nevirapin i høj grad biotransformeres via cytokrom P450 (oxidativ) metabolisme til adskillige hydroxylerede metabolitter.
In vivo studies in humans and in vitro studies with human liver microsomes have shown that nevirapine is extensively biotransformed via cytochrome P450 (oxidative) metabolism to several hydroxylated metabolites.