Sec. 4. A pharmacist may substitute for a prescribed biological product if the following conditions are met:
(1) The substitute has been determined by the federal Food and Drug Administration to be interchangeable with the prescribed biological product.
(2) The prescribing practitioner has:
(A) for a written prescription, signed on the line under which the words "May substitute." appear; or
(B) for an electronically transmitted prescription, electronically transmitted the instruction "May substitute.".
(3) The pharmacist has informed the customer of the substitution.