In this randomized, double-blind study, 48 HIV-infected, otherwise healthy, male volunteers receive either multiple-dose CPI-1189 or placebo by mouth for 15 consecutive days. Each dosing group begins 6 weeks following the start of the preceding group. Volunteers enter the study site the night before dosing on Days 1 and 15 and remain at the study site for 72 hours following dosing. Throughout the study, volunteers have physical exams and donate samples of blood, urine, cerebrospinal fluid, and sperm.