Coformulated elvitegravir , cobicistat , emtricitabine , and tenofovir disoproxil fumarate ( tenofovir ) might be a safe and efficacious switch option for virologically suppressed patients with HIV who have neuropsychiatric side-effects on a non-nucleoside reverse transcriptase inhibitor ( NNRTI ) or who are on a multitablet NNRTI-containing regimen and want a regimen simplification .