Morning AUC: ↓ 33%* (↓ 26 to ↓ 39) Afternoon AUC: ↓ 37%* (↓ 26 to ↓ 46) Evening AUC: ↓ 46%* (↓ 37 to ↓ 54) Morning Cmax: ↔ * Afternoon Cmax: ↔ * Evening Cmax: ↓ 29%* (↓ 11 to ↓ 43) Morning Cmin: ↓ 39%* (↓ 24 to ↓ 51) Afternoon Cmin: ↓ 52%* (↓ 47 to ↓ 57) Evening Cmin: ↓ 57%* (↓ 50 to ↓ 63) * when compared to indinavir 800 q8h alone (CYP3A4 induction) For co-administration of efavirenz with low-dose ritonavir in combination with a protease inhibitor, see section on ritonavir below.