Adams Respiratory Therapeutics, Inc.. The Group's principal activity is to develop and market prescription pharmaceuticals for the treatment of respiratory disorders. The Group markets seven OTC products under the brand name Mucinex, Delsym and Humibid. Mucinex is long-acting, single-ingredient guaifenesin product. Guaifenesin is an expectorant that thins bronchial secretions and makes coughs more productive. The Group operates in the United States.On July 31,2006, the Group repurchased the Fort Worth, Texas manufacturing assets from Cardinal Health.