Hos HIV- 1- inficerede patienter (n = 9), som fik efavirenz 200 – 600 mg 1 gang dagligt i mindst 1 måned, lå koncentrationerne i cerebrospinalvæsken mellem 0, 26 til 1, 19% (gennemsnit 0, 69%) af den tilsvarende plasmakoncentration.
In HIV-1 infected patients (n = 9) who received efavirenz 200 to 600 mg once daily for at least one month, cerebrospinal fluid concentrations ranged from 0.26 to 1.19% (mean 0.69%) of the corresponding plasma concentration.