This study explores the environmental sustainability of digital health devices, specifically smart pillboxes, which are designed to help patients manage their medication, improve their health, and reduce medication non-adherence. The use of such devices has increased electronic and plastic waste and has resulted in a higher demand for critical raw materials, raising questions about their potential environmental impacts. The Digital Health in Circular Economy (DiCE) project aims to address these issues by examining the environmental sustainability of digital health devices and providing solutions to reduce their impact on the environment. This research uses Life Cycle Assessment (LCA), Disassembly Map, Recovery Assessment, and Circular Product Readiness methods to assess the environmental impact of smart pillboxes at both product and functional levels. The study examines the potential environmental impact of the product's materials, production, use, and end-of-life disposal. The research suggests improvements to increase the product's environmental sustainability, such as the use of screws instead of snap fits to attach the sub-assemblies, fixating the battery in a designated spot to prevent detaching, and promoting environmentally desirable habits, such as prolonging battery life and guiding end-of-life recovery of the product. The study concludes that there is potential for further improvement to increase the product's environmental sustainability, which could lead to an improved overall health. While the current findings do not lead to absolute conclusions, this research provides a basis for comparing the environmental impact (in DALY) and benefits of digital health devices (in QALY).