Which information is not required on the labeling of a prescription container for Schedule III controlled substances?

In the context of labeling for a prescription container for Schedule III controlled substances, certain pieces of information are mandated by law to ensure clarity and compliance with safety regulations. When it comes to the number of dosage units dispensed, while this information is often important for inventory and tracking purposes, it is not a required element on the label.

The labeling must include the patient's name to ensure the medication is dispensed correctly and is associated with the right individual. Including the prescribing physician's name is critical for accountability and verification that the medication is prescribed appropriately. Additionally, directions for use are essential to provide guidance on how the medication should be taken, which helps to prevent misuse or unintentional harm.

Thus, the absence of the number of dosage units dispensed from the required label elements highlights its non-essential status compared to the other listed items, which directly relate to patient safety and prescription verification.