|1||NCT00557921||Terminated||Clopidogrel and the Optimization of Gastrointestinal Events (COGENT-1)||
||5000||All||21 Years and older (Adult, Senior)||NCT00557921||CG104
|COGENT-1||December 2007||November 2009||November 2009||November 14, 2007||January 28, 2009||
|2||NCT02551744||Recruiting||Proton Pump Inhibitor Versus Histamine-2 Receptor Antagonist for the Prevention of Recurrent Peptic Ulcers||
||334||All||20 Years to 90 Years (Adult, Senior)||NCT02551744||VGHKS12-CT7-08||July 2012||July 2018||July 2018||September 16, 2015||September 29, 2017||
† Study has passed its completion date and status has not been verified in more than two years.