N.M. Stat. § 30-31A-15
Immunity.
No civil or criminal liability shall be imposed by virtue of the Imitation Controlled
Substances Act on any person registered under the Controlled Substances Act [Chapter
30, Article 31 NMSA 1978] who manufactures, distributes or possesses an imitation
controlled substance for use as a placebo by a registered practitioner in the course of
professional practice or research.