Objective: To assess the psychological and behavioral characteristics of gay and bisexual men who intend to use antiretroviral post-exposure prophylaxis (PEP) to prevent HIV infection. Methods: Gay and bisexual men who had not tested HIV seropositive and were not in long-term exclusive sexual relationships (n = 327) completed anonymous surveys consisting of demographic characteristics, gay community acculturation, experience with and attitudes toward PEP, substance use, and sexual behavior in the past 6 months.
