Methadone has also been found to reduce the frequency of injecting and the sharing of injecting equipment thus also decreasing the risks of transmission of blood borne viruses.
Methadone maintenance treatment improves health, reduces illicit heroin usage, reduces infectious diseases transmission and overdose death. However it's effectiveness is compromised if low maintenance doses of Methadone are used. Studies have shown that those receiving greater than or equal to 60mg daily doses of Methadone are 70% more likely to remain in treatment than those on doses less than 60mg daily. Degenhardt and his colleagues in 2009 found that Methadone decreases mortality by 29% in this cohort of patients.
Thus in summary Methadone is of vital importance in the optimal treatment of patients in opioid agonist therapy.