Why isn't methadone successful all the time?

Methadone isn't always successful due to various factors, including individual variability in metabolism, the presence of co-occurring mental health disorders, and the complexity of addiction itself. Some patients may not adhere to the treatment regimen, while others might experience inadequate dosing or side effects that hinder their progress. Additionally, environmental factors, such as social support and access to resources, can significantly influence treatment outcomes. Overall, successful management of addiction often requires a comprehensive, individualized approach beyond medication alone.