QNADA members can access quality, independent relevant information through this international and interdisciplinary journal “Mental Health and Substance Use” to explore the complex issues arising from co-existing mental health and substance use. The Mental Health and Substance Use journal informs, develops, and educates professionals by facilitating, sharing, and pooling knowledge. It covers assessment, intervention, treatment, prevention, innovation, opinion, conceptual exploration and analysis, service delivery, service development, policy and procedure, research and debate.