This research proposal investigates the improvement of treatment services for patients with dual diagnosis, a condition characterized by co-occurring mental illness and substance abuse disorders. The study aims to explore the current landscape of treatment approaches, identify gaps, and propose strategies for enhancing care. The proposal includes an introduction to dual diagnosis, background information on the challenges faced by patients, a review of existing literature on pharmacological and non-pharmacological interventions, and a discussion of the need for personalized approaches. The methodology outlines a qualitative research design, including data collection through interviews, sampling strategies, and ethical considerations. The research seeks to understand the experiences and needs of patients to inform the development of more effective and integrated treatment models. The proposal also includes a detailed timeline and a grant chart for the research project.