What essential information must a prescriber include when prescribing controlled substances?

When prescribing controlled substances, it is essential for the prescriber to include their DEA (Drug Enforcement Administration) number. This unique identifier is crucial because it signifies that the prescriber is authorized to prescribe controlled substances, which are regulated due to their potential for abuse and addiction. Federal law mandates that prescriptions for controlled substances must include the prescriber’s DEA number to ensure proper tracking and monitoring of these medications, thereby enhancing patient safety and compliance with regulations.

In contrast, while emergency contact information, the prescribing pharmacist's license number, and the patient's medical history might be relevant in other contexts, they are not required elements on a prescription for controlled substances. The DEA number specifically serves a regulatory purpose and helps prevent illicit distribution, making it a critical piece of information on such prescriptions.