 According to data, an efavirenz EFV-containing regimen 2 NRTIs 1 NNRTI, with EFVas the NNRTI requires fewer pills for the patient, has mild and few side effects, and is more effective in reducing viral load than other regimens, making it the preferred choice for most patients. However, for some patients, an EFV-containing regimen is not feasible due to side effects, acquired NNRTI-resistant HIV virus, or other undesirable effects. For these patients, it is necessary to find alternative regimens with comparable safety and efficacy. This study examined how well different combinations of anti-HIV drugs work, including safety and drug tolerability for various combinations. 