Which element is required on all prescriptions for controlled substances?

• A. Date prescription was issued.
• B. Prescriber's middle name
• C. Pharmacy tax ID number
• D. Patient's nickname

Answer: (A)

The date the prescription was issued is required on all controlled-substance prescriptions because it anchors the order in time, showing exactly when the authorization occurred. This moment matters because controlled substances have strict validity windows and dispensing rules, so the pharmacist must verify that the prescription is still within the permitted period to be filled. The date also supports auditing and prevents backdating or forgery by tying the drug order to a specific point in the prescriber’s record. The other items listed aren’t universally required elements on a prescription: a middle name isn’t a standard necessity, a pharmacy tax ID belongs to business records rather than the medication order, and a nickname isn’t a reliable identifier for the patient.