UlcerGard New non-prescription preventive for Equine Gastric Ulcer Syndrome. Contains omeprazole, which suppresses acid production in a horse’s stomach, and at the recommended dosage, effectively prevents the onset of ulcers. Dosage during periods of stress is ¼ tube daily for horses weighing between 600 and 1200 lbs. For horses over 1200 lbs, ½ tube daily is recommended. Cinnamon flavored.