Table 1. Current Guidelines for Salvage Therapy

Prior Regimen: 2 NRTIs + New Regimen: 2 New NRTIs +

NFV RTV or IDV or RTV/SQV or RTV/NVP or IDV/NVP
RTV or IDV RTV/SQV or NFV/NVP
SQV NFV or RTV or RTV/SQV or IDV/NVP

Adapted from reference 1. NFV denotes nelfinavir; RTV, ritonavir; IDV, indinavir; SQV, saquinavir; and NVP, nevirapine.