Which pharmaceutical packaging innovation was first mandated by the US Poison Prevention Packaging Act of 1970 and dramatically reduced child poisonings?

The pharmaceutical industry has seen remarkable innovations in product packaging over the decades, driven by the need for safety, compliance, and patient-centered design. From childproof caps to smart packaging that tracks medication adherence, packaging technology has evolved to address critical healthcare challenges. This trivia question explores a significant milestone in the history of pharmaceutical packaging that changed how we ensure medication safety.

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Child-resistant caps (push-down-and-turn mechanism)
Blister packs with aluminum backing
Tamper-evident seals with holographic elements
Unit-dose packaging for hospitals