(a) To ensure uniform and equitable implementation and enforcement throughout this state, this chapter constitutes the whole field of regulation regarding over-the-counter sales of products that contain ephedrine, pseudoephedrine, or norpseudoephedrine.
(b) This chapter preempts and supersedes a local ordinance, rule, or regulation adopted by a political subdivision of this state pertaining to over-the-counter sales of products that contain ephedrine, pseudoephedrine, or norpseudoephedrine.
(c) This section does not preclude a political subdivision from imposing administrative sanctions on the holder of a business or professional license or permit issued by the political subdivision who engages in conduct that violates this chapter.