720 ILCS 602/20

(a) No person may sell or offer for sale any dietary supplement containing any quantity of ephedra or ephedrine alkaloids to any person located within the State or to any person making the purchase from within the State. (b) The prohibition in subsection (a) of this Section does not apply to the sale of any product that receives explicit approval as safe and effective for its intended use under the federal Food, Drug, and Cosmetic Act (21 U.S.C. 355) or is lawfully marketed under an over-the-counter monograph issued by the U.S. Food and Drug Administration.