What is a key requirement for the storage of controlled substances?

The storage requirement for controlled substances is grounded in the need to prevent unauthorized access and ensure the security of these potentially dangerous medications. Storing controlled substances in a securely locked cabinet or safe is essential because it minimizes the risk of theft, misuse, or diversion. This regulation is part of broader legal requirements governed by the Drug Enforcement Administration (DEA) and other regulatory agencies that aim to control substances with a potential for abuse.

In contrast, while temperature control is important for certain medications, the stipulation in this question does not prioritize temperature as a primary factor for controlled substance storage. Controlled substances are not allowed to be stored freely on any shelf due to security concerns, and refrigeration is unnecessary for most of these substances, which could potentially damage them or render them less effective. Therefore, the requirement for secure storage ensures compliance with legal standards and protects public health.