IndinavirNelfinavirHIV Protease InhibitorsSaquinavirRitonavirOxazinesAnti-HIV AgentsStavudineBenzoxazinesHIV InfectionsPyrimidinonesHIV ProteaseLopinavirReverse Transcriptase InhibitorsDrug InteractionsHIV-1Area Under CurveCarbamatesLamivudineDrug Therapy, CombinationZidovudineCytochrome P-450 CYP3ACD4 Lymphocyte CountDrug Resistance, ViralViral LoadDidanosineAntiretroviral Therapy, Highly ActiveRNA, ViralPyuriaP-GlycoproteinDibenzocycloheptenesAspartic Acid ProteasesNevirapineSophoraTreatment FailureSulfonamidesChromatography, High Pressure LiquidAryl Hydrocarbon HydroxylasesCytochrome P-450 Enzyme SystemDideoxynucleosidesProtease InhibitorsAnti-Retroviral AgentsMixed Function Oxygenases