The improper disposal of post-consumer pharmaceutical waste poses significant threats to environmental and public health, as trace pharmaceuticals increasingly contaminate water bodies, soil, and food chains. This paper explores sustainable management practices for post-consumer pharmaceutical waste by critically assessing international drug take-back programs and evaluating advanced disposal technologies aimed at mitigating environmental hazards. Drawing on case studies from countries such as Sweden, Canada, the United States, and Japan, the study analyzes the effectiveness, scalability, and public engagement strategies of diverse pharmaceutical return schemes. These programs, often operated through pharmacies and municipal waste systems, demonstrate varying degrees of success influenced by regulatory frameworks, public awareness, and stakeholder collaboration. In addition to programmatic evaluation, this study examines advanced disposal technologies such as high-temperature incineration, plasma gasification, and emerging chemical neutralization processes. Each method is evaluated in terms of environmental impact, energy efficiency, cost-effectiveness, and feasibility for widespread adoption. Particular attention is given to challenges faced by low- and middle-income countries, including infrastructure deficits and regulatory inconsistencies, which hinder effective implementation of sustainable waste management practices. The findings suggest that while take-back programs are essential for public participation and upstream waste control, their success depends on strong policy mandates, continuous education, and incentives for proper disposal. Moreover, integrating green chemistry principles and decentralized treatment models can further enhance sustainability in pharmaceutical waste management. The paper concludes by proposing a comprehensive framework that combines community-based collection initiatives, robust regulatory oversight, and the deployment of advanced disposal technologies tailored to regional contexts. This integrated approach is vital for minimizing pharmaceutical pollution and ensuring long-term environmental protection.