Court of Appeals for the Seventh Circuit April 5, 2001, 99-3440 (Bober, Estelle v. Glaxo Wellcome PLC)

WILLIAMS, Circuit Judge.

Mortimer Bober brought a class action lawsuit against the firms that manufacture and market Zantac 75 and Zantac 150, the over-the-counter and prescription strength forms of the stomach acid reliever raniti-dine, on the ground that the firms provide consumers with false and misleading information about the substitutability of the two drugs, in violation of Illinois law.