Which regulatory measure focuses on segregating outdated RX drugs?

The focus of the correct answer revolves around ensuring that outdated prescription drugs are handled in a manner that maintains the integrity of the pharmacy's operations and patient safety. Documenting storage conditions is crucial because it encompasses the processes that ensure that drugs are stored correctly. Maintaining clear guidelines on how and where outdated drugs are stored helps in the effective segregation of these drugs from those that are still within their expiration date.

By keeping an accurate record of the storage conditions, pharmacy personnel can identify areas where outdated medications might become mixed with current stock. This practice not only aids in compliance with regulatory standards but also minimizes the risk of administering expired medications to patients, which can lead to adverse health outcomes.

In contrast, while the other measures—documenting sales data, establishing distribution procedures, and segregating drugs with inadequate labels—contribute to overall pharmacy operations and safety, they do not specifically address the issue of managing outdated drugs in the same direct and clear manner as documenting storage conditions does.