N.M. Admin. Code § 16.19.15.6
The objective of Part 15 of Chapter 19 is to establish standards to be followed by retailers and distributors for the safe and competent delivery, distribution, and disposal of dangerous drugs limited to veterinary use and to carry out the purpose of the Drug Product Selection Act by providing a uniform standard for drug product selection of animal drugs. Section 26-3-3(A) NMSA 1978 permits a pharmacist to select a lower cost multiple source drug that meets a final determination in the federal register when a more costly version of the drug is prescribed. Animal drugs approved by FDA are subject to final determinations in the federal register and therefore qualify for drug product selection as described in this regulation.
N.M. Admin. Code § 16.19.15.6