Results from a trial (ACTG 241) evaluated triple therapy with VIRAMUNE, zidovudine and didanosine compared to zidovudine + didanosine, in 398 HIV-1 infected patients (mean baseline 153 CD4+ cells/ mm3; plasma HIV-1 RNA 4.59 log10 copies/ ml), who had received at least 6 months of NRTI therapy prior to enrolment (median 115 weeks).