ARV regimen constituting of tenofovir, lamivudine and efavirenz (TDF/3TC/EFV) has been selected as basic regimen for HIV treatment in Vietnam. Despite the increasing use of this regimen, available data about EFV-related neuropsychiatric toxicity and TDF-related renal dysfunction is still limited. Objectives: To determine incidence of neuropsychiatric and renal toxicity and to identify possible related risk factors. | TDF/3TC/EFV regimen related renal and neuropsychiatric toxicity in vietnam hivinfected patients