The US Food and Drug Administration has approved the first once-a-day 3-drug combination for the treatment of HIV infection in adults (http://www.fda.gov/cder/drug/infopage/atripla/default.htm).
Atripla combines the active ingredients of 3 widely used antiretroviral drugs: efavirenz, emtricitabine, and tenofovir disoproxil fumarate. The drug will be available for use in the United States as a new product approved under a New Drug Application and can be considered for purchase for use in 15 other countries included under the President's Emergency Plan for AIDS Relief program, a $15 billion initiative to fight the global HIV/AIDS pandemic.
Hampton T. Once-Daily Anti-HIV Pill. JAMA. 2006;296(8):924. doi:10.1001/jama.296.8.924-d