Which statement is explicitly required when issuing a prescription for controlled substances?

• A. MUST be written on the Rx
• B. The dose must be written in both words and numbers
• C. Pre-printed Rx forms cannot have controls as an option
• D. The Rx must be kept on file electronically

Answer: (A)

Prescriptions for controlled substances must be written on the prescription itself. This requirement creates a formal, auditable record that clearly documents the patient, the medication, the dose, and the instructions, helping to prevent misinterpretation, tampering, or improper dispensing. While electronic prescribing or other details may be regulated differently across jurisdictions, the explicit, universal expectation is that the order be in writing on the Rx. The other specifics—such as spelling the dose in words and numbers, or whether pre-printed forms can include controls or must be kept electronically—vary by place and are not universally mandated.