The lopinavir mean steady-state AUC, Cmax, and Cmin were 72.6 ± 31.1 μ g• h/ ml, 8.2 ± 2.9 μ g/ ml and 3.4 ± 2.1 μ g/ ml, respectively after Kaletra 230/ 57.5 mg/ m2 twice daily without nevirapine (n=12), and were 85.8 ± 36.9 μ g• h/ ml, 10.0 ± 3.3 μ g/ ml and 3.6 ± 3.5 μ g/ ml, respectively after 300/ 75 mg/ m2 twice daily with nevirapine (n=12).