NelfinavirLopinavirPyrimidinonesHIV Protease InhibitorsRitonavirAnti-HIV AgentsSaquinavirHIV InfectionsBenzoxazinesOxazinesIndinavirReverse Transcriptase InhibitorsHIV ProteaseHIV-1StavudineDrug Resistance, ViralDrug Therapy, CombinationAntiretroviral Therapy, Highly ActiveViral LoadCarbamatesDrug InteractionsArea Under CurveDrug Dosage CalculationsPlasmaLamivudineCD4 Lymphocyte CountCapsulesDrug Resistance, Multiple, ViralTreatment FailureRNA, ViralDrug CombinationsNevirapineZidovudineCytochrome P-450 CYP3APyridinesOrganophosphonatesDibenzocycloheptenesAspartic Acid ProteasesAnti-Retroviral AgentsOligopeptidesHIVSulfonamidesHIV-Associated Lipodystrophy SyndromeDrug Administration ScheduleAdenineP-GlycoproteinChromatography, High Pressure LiquidAntibiotics, AntitubercularProtease InhibitorsTablets