A 9-state analysis of designer stimulant, "bath salt," hospital visits reported to poison control centers.

Study Objective: A new generation of designer stimulants marketed as "bath salts" emerged in late 2010. The goal is to describe the epidemiologic emergence of designer stimulants in 9 states in the Midwest.

Methods: A retrospective review of the National Poison Data System was performed between November 1, 2010, and November 30, 2011.