Massachusetts General Laws Part I. Administration of the Government (Ch. 1-182) Ch. 94C, § 22

(a) A practitioner who dispenses a controlled substance by issuing a written or electronic prescription shall state on the prescription the name, address and registration number of the practitioner, the date of delivery of the prescription, the name, dosage and strength per dosage unit of the controlled substance, the name and address of the patient unless it is a veterinary prescription, the directions for use and any cautionary statements required, and a statement indicating the number of times to be refilled.

(b) A practitioner who dispenses by delivering to an ultimate user a controlled substance which is not for immediate administration shall package the controlled substance in a container, affixing to the container a label bearing the practitioner's name and address, the date of dispensing, the name of the patient unless it is a veterinary prescription, the name, dosage and strength per dosage unit, of the controlled substance, directions for use and any necessary cautionary statements.

(c) Any prescription issued by a practitioner for an opioid substance contained in Schedule II of section 3 shall include a notation on the prescription that the patient may fill, upon request, the prescription in compliance with subsection (d 3/4 ) of section 18 in an amount not to exceed the full prescribed quantity.