Design a theory-based behavioral intervention to reduce medication non-adherence among elderly patients managing chronic conditions. Your intervention should: 1) Apply at least two behavioral science theories (e.g., Theory of Planned Behavior, COM-B model) to explain the adherence problem 2) Identify specific behavioral barriers and facilitators based on empirical evidence 3) Design a multi-component intervention that addresses these factors through appropriate behavioral techniques 4) Specify the implementation context (healthcare setting, community, etc.) 5) Include evaluation methods to measure effectiveness 6) Consider potential unintended consequences and how to mitigate them 7) Address scalability and sustainability of the intervention. Provide justification for each element based on behavioral science principles.