Cempedak leaves (Artocarpus champeden L.) contain secondary metabolites such as flavonoids, tannins, saponins and have antioxidant and anti-inflammatory properties. This study aims to determine the antiulcer effect of ethanol extract of cempedak leaves (A. champeden L.) with the parameters of the area of gastric injury, gastric volume, pH and total gastric acidity and gastric histology. This st…