A needle exchange program is a public health initiative that offers intravenous drug users a safe place to exchange their used needles for new ones. This helps prevent the spread of diseases like HIV and hepatitis among drug users and keeps them from using possibly contaminated equipment. There are several synonyms for needle exchange, some of which include syringe exchange, harm reduction program, needle and syringe program, and safe injection site. These terms are often used interchangeably and refer to programs that provide sterile needles and other supplies to people who inject drugs, as well as education and access to other health services.