(1) Upon a written prescription of the physician; or
(2) Upon an oral order of the physician, which order is reduced promptly to writing and filed by the pharmacist; or
(3) By refilling any written or oral prescription if the refilling is authorized by the prescriber either in the original prescription or by oral order which is reduced promptly to writing and filed by the pharmacist in the same manner and under the same conditions as any other prescription issued by a practitioner licensed by law to write prescriptions; or
(4) Upon a signed statement of the patient, upon proper identification, stating that the prescriptions or instruments specified in §§ 137.15 and 137.16 were lost or broken, as the case may be; the name and address of the prescriber, the name and address of the patient, and the purpose for which the prescription was ordered; provided, that the registered pharmacists or assistant registered pharmacists who deliver or sell any instruments specified in §§ 137.15 and 137.16 shall send a copy of such affidavit to the department of state police by the fifteenth of the month following the month in which the instruments were delivered or sold. Written or oral prescriptions when reduced to writing, for instruments specified in §§ 137.15 and 137.16, shall contain the date of such prescription, the name and address of the prescriber, the name and address of the patient, the purpose for which the prescription is ordered, and the date when dispensed and by whom dispensed.
(B) A licensed physician or other allied medical practitioner, authorized by the laws of the state to prescribe or administer controlled substances or cannabis to human beings or animals, may authorize any person, or the owner of any animal, to purchase and have in his possession any of the instruments specified in §§ 137.15 and 137.16, which may be sold to him without a specific written or oral prescription or order, by any person authorized by the laws of the state to sell and dispense controlled substances or cannabis, if the authorization is in the form of a certificate giving the name and address of the licensed physician or other allied medical practitioner, the name, address, and signature of the person, or of the owner of the animal, so authorized, the purpose or reason of the authorization, and the date of the certificate, and in that event, no other prescription, writing or record shall be required to authorize the possession or sale of the instruments.
(ILCS Ch. 720, Act 635, § 5)