As used in this chapter:
(1) "Brand name" means the proprietary or trade name placed upon a drug, its container, label or wrapping at the time of packaging;
(2) "Generic name" means the United States Adopted Name (USAN) or the official title of a drug published in the latest edition of a nationally recognized pharmacopoeia or formulary;
(3) "Substitute" means to dispense, with the practitioner's authorization, a "therapeutically equivalent" generic drug product of identical drug salt or an interchangeable biological product in place of the drug or biological product ordered or prescribed;
(4) "Therapeutically equivalent" means the same efficacy and toxicity when administered to an individual in the same dosage form; and
(5) "Practitioner" means a physician, osteopath, dentist, podiatrist, veterinarian, or any other person authorized to prescribe drugs under the laws of this State.