Mo. Rev. Stat. § 338.180: Prosecution of offenders.

Upon receiving information that any provision of sections 338.010 to 338.190 has been or is being violated, the secretary of the board of pharmacy shall investigate the matter, and upon probable cause appearing, shall, under the direction of the board, file a complaint and prosecute the offender therefor. It shall be the duty of the prosecuting attorney, upon the request of the secretary, to take charge of and conduct such prosecutions.