Which information must be included on a controlled substance prescription?

• A. Patient's insurance information
• B. Dispensing pharmacy's phone number
• C. Prescriber's registration number
• D. Patient's home address

Answer: (C)

The inclusion of the prescriber's registration number on a controlled substance prescription is crucial for both legal and safety reasons. This number indicates that the prescriber is authorized to prescribe controlled substances, which are regulated by law due to their potential for abuse and dependence. By requiring the prescriber’s registration number, pharmacies and state regulators can confirm that the prescription is valid and comes from a licensed professional, helping to prevent illegal distribution and misuse of controlled substances.

In contrast, while patient insurance information, the dispensing pharmacy's phone number, and the patient's home address might be relevant in certain contexts, they are not universally required on every controlled substance prescription. The primary focus of federal and state regulations regarding controlled substances is to ensure that the prescriber is authorized, thus safeguarding the patient and the community from potential harm associated with improperly prescribed medications.