811—12.2 (169) Extra label use of veterinary drugs and immunization products. Any extra label use of veterinary products shall be considered, prescribed or used by a practicing veterinarian only; and shall be subject to the following criteria:
	 12.2(1) There shall be a veterinarian/client/patient relationship as defined in subrule 12.1(3).
	 12.2(2) There are no marketed products specifically labeled for the conditions diagnosed; or if the labeled dosage is inadequate for the condition, in the opinion of the veterinarian.
	 12.2(3) The health of the treated animal(s) is immediately threatened and suffering or death would result from a failure to treat the affected animal(s).