Fatigue is a common problem for many people with HIV/AIDS, interfering with daily activities and serving as a significant barrier to working among those whose health is otherwise stable or restored by antiretroviral (ARV) medication. Fatigue in HIV is associated with disability and diminished quality of life. It may be caused by ARVs or by the virus itself. A related study tested whether modafinil, of which armodafinil is an r-isomer, could reduce fatigue in HIV/AIDS patients. Armodafinil, believed to have a longer duration and greater effect than modafinil, will be tested on the same criteria.