Which of the following is NOT required on a prescription label?

In the context of prescription labeling, while the name, strength, and quantity of the medication are essential pieces of information typically included on a prescription label, the option indicating that these elements are "NOT required" is not accurate. The name of the medication, its strength, and the quantity dispensed are critical for identifying the specific medication and ensuring the patient receives the correct prescription.

On the other hand, a prescription serial number is crucial for record-keeping and tracking purposes in a pharmacy. The name of the prescriber is also important, as it provides information about who authorized the medication, which can be essential for verifying the legitimacy of the prescription. The date of dispensing is necessary as it establishes the timeline of when the medication was provided to the patient.

Thus, while the name, strength, and quantity of the medication are fundamental details that a patient should be aware of, they are indeed required on a prescription label. Therefore, the correct selection among the options is one that does not represent a necessary component of the prescription label in compliance with regulatory standards.