This article describes the prevalence of HIV/AIDS and other bloodborne infections is well established among injection drug user (IDU) populations in South Asia (SA). IDU populations in SA are diverse and display different demographic and socioeconomic profiles. The current provision of sterile injecting equipment as part of public health initiatives is suboptimal. Although some needle and syringe exchange programs (NSEPs) operate in the region, pharmacies and "friends" continue to be a major source of syringe acquisition. It is suggested that the cost of syringes in the region is significantly higher in real terms than in several other countries and negatively impacts on the ability of IDUs to acquire needles and syringes. In addition, existing NSEPs offer poor coverage both at the population and individual level. Their effective functioning is hampered by resource constraints, ambivalent policy positions, little attention to quality, and environmental factors. Secondary syringe exchange is a nascent phenomenon in SA that needs to be adequately documented and evaluated. Urgent attention needs to be given to developing alternative models of needle syringe delivery to scale-up HIV prevention interventions for IDUs. This study was conducted in the first quarter of 2004 and updated in 2006. We used key informants, previously unpublished and published data from research studies, and interventions programs, service statistics, and primary data to inform this study.