Antiretroviral therapy Antiretroviral Therapy Category Clarifications/Special considerations a) Nucleoside reverse transcriptase inhibitors (NRTIs) No assigned category Abacavir (ABC) Tenofovir (TDF) Zidovudine (AZT) Lamivudine (3TC) Didanosine (DDI) Emtricitabine (FTC) Stavudine (D4T) b) Non-nucleoside reverse transcriptase inhibitors (NNRTIs) Efavirenz (EFV) Etravirine (ETR) Nevirapine (NVP) Rilpivirine (RPV) c) Protease inhibitors (PIs) Ritonavir-boosted atazanavir (ATV/r) Ritonavir-boosted lopinavir (LPV/r) Ritonavir-boosted darunavir (DRV/r) Ritonavir (RTV) d) Integrase inhibitors Raltegravir (RAL)