Iowa Code § 322.11
Whenever the department shall believe from evidence satisfactory to it that any person has or is now violating any provision of this chapter, the department may, in addition to any other remedy, bring an action in the name and on behalf of the state of Iowa against such person and any other person concerned in or in any way participating in or about to participate in practices or acts in violation of this chapter, to enjoin such person and said other person from continuing the same. In any such action, the department may apply for and on due showing be entitled to have issued the court's subpoena, requiring forthwith the appearance of any defendant, the defendant's agent and employees and the production of documents, books, and records as may appear necessary for the hearing of such petition to testify and give evidence concerning the acts or conduct or practices or things complained of in such application for injunction. In said action an order or judgment may be entered, awarding such preliminary or final injunctions as may be proper.
Iowa Code § 322.11