(Merial) UlcerGard is the first and only proven preventative for equine gastric ulcer syndrome (ECUS). It suppresses acid production at the source; once a day dosing is convenient to administer; flavored paste is well accepted by horses; proven safe and effective in horses weighing at least 600 lbs. Each syringe contains 4 preventative doses with a total of 2.38 gms. of omeprazole for horses weighing between 600-1200 lbs.