R.I. Gen. Laws § 5-19.1-19
Pharmacists when dispensing a prescription shall, unless requested otherwise by the individual presenting the prescription in writing, substitute drugs containing all the same active chemical ingredients of the same strength, quantity, and dosage form as the drug requested by the prescriber from approved prescription drug products in accordance with the provisions of § 21-31-16, unless ordered by the prescribing physician to dispense as brand name necessary on the prescription form, or if the prescriber gives oral direction to that effect to the dispensing pharmacist. The requirements of this section shall not apply to an order to dispense a drug for immediate administration to a licensed hospital, nursing facility or hospice facility in-patient. The pharmacist will make a product selection from approved prescription drug products and shall pass the savings on to the ultimate consumer. When a drug product selection is made, the pharmacist shall indicate the product dispensed on the written prescription or on the oral prescription, which has been reduced to writing, or product information may be maintained on a computerized system if information is readily retrievable.
R.I. Gen. Laws § 5-19.1-19