The Substance Abuse and Mental Health Services Administration (SAMHSA) is a U.S. government agency under the Department of Health and Human Services. Its primary mission is to reduce the impact of substance abuse and mental illness on communities. SAMHSA provides resources, funding, and support for programs that promote prevention, treatment, and recovery services. SAMHSA also collects and analyzes data related to substance use and mental health, helping to inform policies and improve public health. The agency works with various stakeholders, including state and local governments, healthcare providers, and community organizations, to enhance the quality of care for individuals facing these challenges.