This book offers a new approach to help students to understand problematic substance use across a range of social work practice settings. Written from both an anti-discriminatory and evidence-based perspective, the book highlights successful responses to the issues. Each chapter includes reflective exercises and examples of further reading, challenging students to critically reflect on their practice. The book provides a detailed understanding of: Historical and current policy relating to prohibition and drug use A range of substances and their potential effects on service users Models of best practice including screening and assessment, brief intervention, motivation approaches and relapse prevention Particular issues and needs of a diverse range of service user groups This will be an essential text for social work students taking courses in substance use and addiction. It will also be valuable reading for qualified social workers and students taking related courses across the health and social care field.