7:33AM Horizon Pharma and Mallinckrodt, the pharmaceuticals business of Covidien (COV), enter Into co-promotion agreement for DUEXIS in the United States (HZNP) 4.67 : Horizon Pharma (HZNP) and Mallinckrodt LLC the Pharmaceuticals business of Covidien (COV), announced that they have entered into a U.S. co-promotion agreement for DUEXIS (ibuprofen and famotidine), which is indicated for the relief of signs and symptoms of rheumatoid arthritis and osteoarthritis and to decrease the risk of developing upper gastrointestinal ulcers. Under the terms of the agreement, Horizon granted Mallinckrodt the right to co-promote DUEXIS in the United States through Dec 31, 2014 with the potential to renew for additional periods. Horizon and Mallinckrodt have agreed that Mallinckrodt will promote to targeted physicians and is entitled to receive performance-based compensation. The Mallinckrodt sales force is expected to begin promoting DUEXIS to physicians in August 2012. Horizon will continue to record all revenues for DUEXIS and will remain responsible for DUEXIS manufacturing, supply and regulatory activities.