Iowa Attorney General Tom Miller today joined 19 state attorneys general in filing a federal antitrust lawsuit against generic drugmakers Heritage Pharmaceuticals Inc., Auribindo Pharma USA Inc., Citron Pharma LLC, Mayne Pharma (USA) Inc., Mylan Pharmaceuticals Inc. and Teva Pharmaceuticals USA Inc. The lawsuit alleges the companies entered into illegal conspiracies to unreasonably restrain trade, artificially inflate and manipulate prices and reduce nationwide competition for two generic drugs: doxycycline hyclate delayed release, an antibiotic, and glyburide, an oral diabetes medication. On Wednesday, the U.S. Department of Justice announced federal felony criminal charges against two former Heritage executives — former CEO Jeffrey Glazer and former President Jason Malek — for their alleged roles in conspiracies to fix prices, rig bids and allocate customers for doxycycline hyclate.