This text investigates the complex social paradox of drug use, examining how psychoactive substances function simultaneously as tools for medical benefit and agents of societal harm. Author Charles F. Levinthal utilizes his academic background to synthesize historical, biological, psychological, and sociological data into a cohesive framework for undergraduate study. The work emphasizes the dual nature of drug-taking behavior, challenging students to analyze the systemic impact of both licit and illicit substances on modern life.

The text is structured as a comprehensive academic resource designed for undergraduate coursework in the field of drugs and behavior. Its focus on multidisciplinary analysis and specific attention to often-overlooked categories of substance abuse suggests a rigorous, pedagogical approach intended for students and educators.