Section 21-28-2.02 - Schedules of controlled substances - Establishment(a) There are established five (5) schedules of controlled substances, to be known as schedules I, II, III, IV, and V.(b) The schedules I, II, III, IV, and V shall, unless and until amended pursuant to this chapter, consist of: those enumerated in this article and include substances to be controlled by rule and/or regulation of the director of health as published, except all substances in schedules II, III, IV, and V will require a prescription to be dispensed by an apothecary in the state of Rhode Island; provided, that a prescription will not be required in the following cases: administering, dispensing, or selling at retail of any medicinal preparation that contains in one fluid ounce or if a solid or semi-solid preparation, in one avoirdupois ounce, not more than thirty and one-tenth (30.1) milligrams of opium. Notwithstanding the definition of the word opium contained in any other general or special law, the word opium for purposes of this section shall be as defined in the official United States pharmacopoeia. The prescription exemption authorized by this section shall be subject to the following conditions: (1) That the medicinal preparation administered, dispensed, or sold, shall contain, in addition to the narcotic drug in it, some drug or drugs conferring upon it medicinal qualities other than those possessed by the narcotic drug alone;(2) That the preparation shall be administered, dispensed, or sold in good faith as a medicine and not for the purpose of evading the provisions of this chapter, and provided the preparation shall be dispensed or sold only to a person who shall sign his or her name and address in a legible manner in a record book to be kept for that purpose by the seller.R.I. Gen. Laws § 21-28-2.02