Efavirenz/emtricitabine/tenofovir disoproxil fumarate fixed-dose combination: first-line therapy for all?
ATRIPLA (Bristol-Myers Squibb and Gilead Sciences) is a complete regimen in a single, fixed-dose combination tablet that contains: efavirenz 600 mg, emtricitabine 200 mg and tenofovir disoproxil fumarate 300 mg. Current treatment guidelines recommend this triple combination for initial therapy because of its excellent potency, tolerability and favorable safety profile. Individually, these agents have long half-lifes that allow for once-daily dosing and may provide a pharmacologic bridge for the occasional missed dose. Although several options for once-daily regimens are available, comparative clinical trials are still in progress. This article reviews relevant efficacy and safety data of efavirenz, emtricitabine and tenofovir disoproxil fumarate, compared with other once-daily agents or certain common alternate drugs presently used as initial therapy in treatment-naive patients.
Goicoechea
Miguel
M
University California, School of Medicine, San Diego, CA 92103, USA. mgoicoechea@ucsd.edu
Best
Brookie
B
D000225:Adenine / Q000008:administration & dosage / Q000009:adverse effects / Q000031:analogs & derivatives* / Q000494:pharmacology; D000480:Alkynes; D019380:Anti-HIV Agents / Q000008:administration & dosage / Q000009:adverse effects / Q000494:pharmacology; D048588:Benzoxazines; D003521:Cyclopropanes; D003841:Deoxycytidine / Q000008:administration & dosage / Q000009:adverse effects / Q000031:analogs & derivatives* / Q000494:pharmacology; D004338:Drug Combinations; D000068679:Emtricitabine; D015658:HIV Infections / Q000188:drug therapy / Q000453:epidemiology; D015497:HIV-1 / Q000187:drug effects; D006801:Humans; D063065:Organophosphonates / Q000008:administration & dosage* / Q000009:adverse effects / Q000494:pharmacology; D010078:Oxazines / Q000008:administration & dosage* / Q000009:adverse effects / Q000494:pharmacology; D018894:Reverse Transcriptase Inhibitors / Q000008:administration & dosage / Q000009:adverse effects / Q000494:pharmacology; D000068698:Tenofovir
D000480:Alkynes; D019380:Anti-HIV Agents; D048588:Benzoxazines; D003521:Cyclopropanes; D004338:Drug Combinations; D063065:Organophosphonates; D010078:Oxazines; D018894:Reverse Transcriptase Inhibitors; D003841:Deoxycytidine; D000068698:Tenofovir; D000068679:Emtricitabine; D000225:Adenine; C098320:efavirenz