OBJECTIVE	The purpose of the two identical studies reported in this paper was to evaluate the safety and effectiveness of 10.3 and 20.6 mg omeprazole magnesium , referred to as Ome-Mg 10 and Ome-Mg 20 , respectively ( equivalent to 10 and 20 mg omeprazole ) for the treatment of frequent heartburn administered as a novel 14-day OTC regimen .\