West Virginia MPJE (Pharmacy Jurisprudence) Practice Exam 2026 - Free MPJE Practice Questions and Study Guide

The correct answer is B, as Class B single unit or unit-dose containers are specified to meet certain moisture permeation requirements, which are crucial for maintaining the stability and efficacy of the medications contained within them. The United States Pharmacopoeia (USP) defines these classes based on their ability to protect the contents from moisture, and Class B specifically denotes a level of protection that is adequate for a majority of pharmaceuticals.

In the context of med pak packaging, which is designed for the convenience and safety of patients by combining multiple medications into a single package, adherence to these standards is vital for ensuring the integrity of the medications over their intended shelf life. Thus, compliance with Class B moisture permeation requirements is necessary unless there are more stringent requirements established for a particular drug or product.

Other classes may not provide the same level of protection, which is why Class A, Class C, and Class D are less suitable for this context. Each of those classes has different specifications for moisture protection that may not meet the needs for all medications included in a med pak. Therefore, Class B is the appropriate classification to ensure patient safety and medication effectiveness in the absence of more rigorous standards.