338.665.  Nicotine replacement therapy product, defined — prescribing and dispensing, rulemaking authority. — 1.  For the purposes of this chapter, "nicotine replacement therapy product" means any drug or product, regardless of whether it is available over-the-counter, that delivers small doses of nicotine to a person and that is approved by the federal Food and Drug Administration for the sole purpose of aiding in tobacco cessation or smoking cessation.

  2.  The board of pharmacy and the board of healing arts shall jointly promulgate rules governing a pharmacist's authority to prescribe and dispense nicotine replacement therapy products.  Neither board shall separately promulgate rules governing a pharmacist's authority to prescribe and dispense nicotine replacement therapy products under this subsection.

  3.  Nothing in this section shall be construed to require third-party payment for services described in this section.

  4.  Any rule or portion of a rule, as that term is defined in section 536.010, that is created under the authority delegated in this section shall become effective only if it complies with and is subject to all of the provisions of chapter 536 and, if applicable, section 536.028.  This section and chapter 536 are nonseverable and if any of the powers vested with the general assembly pursuant to chapter 536 to review, to delay the effective date, or to disapprove and annul a rule are subsequently held unconstitutional, then the grant of rulemaking authority and any rule proposed or adopted after August 28, 2019, shall be invalid and void.