Which of the following items is NOT required on an Rx label?

The option regarding physical description is not a requirement on a prescription label. Prescription labels are primarily intended to convey essential information for the safe and proper use of the medication. This includes the name and address of the pharmacy, which provides contact information for patients and prescribers; the name of the prescribing practitioner, which identifies who authorized the medication; and the directions for use, which are critical for ensuring that the patient understands how to properly take the medication.

The physical description, while it may be helpful in certain situations, is not mandated by law or regulation as a necessary component of a prescription label. It is generally considered supplementary information and does not impact the essential aspects of medication safety and efficacy that the label is designed to ensure. Thus, the absence of physical description on a prescription label does not violate any pharmacy regulation.