Atazanavir (also called Latazanavir, Zrivada, Reyataz, BMS-232632) is an azapeptide and HIV-protease inhibitor that is used in the treatment of HIV infections and AIDS in combination with other anti-HIV agents. In a cell-free assay, atazanavir inhibits HIV protease with a Ki value of 2.66 nM. It is used to treat human immunodeficiency virus infection, just like other antiretrovirals. When compared to other PIs, atazanavir can be administered once daily and has less of an impact on the patient's lipid profile. It is only used in conjunction with other HIV medications, just like other protease inhibitors.medications.