In addition to the federal requirements, North Carolina state law requires a prescription form to be preprinted or stamped with two signature lines at the bottom of the form which read: "Product Selection Permitted” and “Dispense as Written". On this form, the prescriber shall communicate instructions to the pharmacist by signing the appropriate line.
Read documentation here, by navigating to section 90-85.28.
For the federal requirements, you can refer to the official documentation here and here.