Which packaging innovation has most significantly improved medication adherence for elderly patients according to recent healthcare studies?

The pharmaceutical and medical device industries have undergone significant changes in their packaging approaches over the decades. Smart packaging, tamper-evident features, and sustainability initiatives are transforming how medical products reach patients. This trivia question explores an innovative packaging technology that's changing medication adherence and patient safety in recent years.

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Calendar blister packs with day/time indicators
RFID-embedded medication bottles
Color-coded prescription vials
Biodegradable plant-based pill casings