What type of packaging is NOT mentioned for drug integrity?

The question focuses on identifying which type of packaging is not typically associated with maintaining drug integrity. In the context of pharmaceutical packaging, the concept of drug integrity refers to ensuring that medications remain effective and safe for consumption throughout their shelf life.

Childproof caps are specifically designed to prevent accidental ingestion by children, thereby contributing to safety in packaging. Staple bags are often used for securing items and preventing tampering, which is also relevant for protecting drug integrity. Bubble pack envelopes provide cushioning and protection against physical damage during transportation, which plays a significant role in maintaining the integrity of the drugs they contain.

In contrast, while plastic containers can indeed be used for pharmaceutical packaging and contribute to drug integrity, they are a generic form of packaging and do not highlight a unique characteristic directly related to drug safety. Therefore, considering the options presented, plastic containers stand out as the choice that was not specifically mentioned in the context of enhancing drug integrity compared to the other more specialized forms of packaging.