An order for a medication, therapy or therapeutic device given by a properly authorised person, which ultimately goes to a person properly authorised to dispense, supply or perform the order (in most situations, a pharmacist).

The prescribed medication, therapy or therapeutic device must be listed in the Schedule of Pharmaceutical Benefits.

An indicator of whether a bioequivalent brand of a medicinal product is allowed to be substituted for the prescribed brand of medicinal product.

Two formulations of the same drug are considered to be bioequivalent if they attain similar concentrations in blood and tissues at similar times with no clinically important differences between their therapeutic or adverse effects.

The concept of bioequivalence is fundamental to the use of generic medicinal products.