Which detail must be provided for controlled substances called in via telephone?

The correct choice emphasizes that when a controlled substance prescription is communicated via telephone, all information that is typically required on a written prescription must be included. This includes essential details such as the patient's name, the medication name, dosage, quantity, directions for use, the prescriber’s name, and their DEA number. This requirement is in place to ensure patient safety and regulatory compliance, as controlled substances are subject to stricter laws due to their potential for misuse.

Providing all this information is critical for accurately filling the prescription and maintaining a proper record in both the pharmacy and for legal purposes. If any of the required information is missing, it could lead to errors or violations of pharmacy law, which underscores the importance of thoroughness when handling controlled substances, regardless of the method of communication.