Ohio Attorney General Mike DeWine filed a lawsuit Wednesday against Allergan plc, Endo Health Solutions Inc., Purdue Pharma LP, Johnson & Johnson and its subsidiary Janssen Pharmaceuticals Inc., and Teva Pharmaceutical Industries Ltd. and its subsidiary Cephalon, alleging that they violated the Ohio Consumer Sales Practices Act and created a public nuisance by disseminating false and misleading statements about the risks and benefits of their opioid painkillers.