( CPIX ) for its gastroenterology drug, Omeclamox-Pak. ACTAVIS PLC (ACT): Free Stock Analysis Report AKORN INC (AKRX): Free Stock Analysis Report CUMBERLAND PHAR (CPIX): Free Stock Analysis Report PERNIX THERAPTC (PTX): Free Stock Analysis Report To read this article on Zacks.com click here. Pernix Therapeutics, LLC ( PTX ) has recently entered into a co-promotion agreement with Cumberland Pharmaceuticals Inc .