Treatment and Criminal JusticeThe Pompidou Group facilitates the transfer of knowledge and supports an integrated approach based on evidence and science. An effective and people-centred response to drug problems should comprise drug-free approaches such as therapeutic communities for amenable candidates and should otherwise be underpinned by  harm reduction and pharmacologically assisted treatment, like opiate agonist therapy. Agonist treatment is an effective and important tool in the fight against HIV and hepatitis C, and can help problem opiate users reduce or discontinue their use of illicit drugs. Drug-free treatment helps drug users determined to stop using or overusing drugs. Drug treatment services are most effective if they are embedded in the general health and social care systems. Through-care prevents interruption of drug treatment and care for people entering and leaving prison. This Programme also assists governments to develop treatment, education and rehabilitation or reintegration measures for drug users as alternatives to conviction or punishment.