The Food and Drug Administration has approved a new drug to treat HIV. The drug called Stribild is a combination of four different HIV medications. Taken once a day, patients given the drug had undetectable amounts of HIV in their blood after 48 weeks. That's comparable to other HIV treatments on the market. Experts say Stribild will cost about 28-thousand dollars a year, which some say is too much for public health programs to afford. The manufacturer says the price is in line with other treatments for HIV.