Antiulcer effect of the pepper trees Schinus terebinthifolius Raddi (aroeira-da-praia) and Myracrodruon urundeuva Allemao, Anacardiaceae (aroeira-do-sertao)

Schinus terebinthifolius Raddi and the Myracrodruon urundeuva Allemao were evaluated in rats and mice for antiulcer effects, as these two plants are widely used in Brazil for gastric ulcer treatment. Extracts of the plants showed a marked protective effect against gastric ulcerations induced by immobilization stress at low temperature in rats. They also showed an increase in the pH and volume of the gastric contents, and reduction in gastric hemorrhage in rats, and decrease in intestinal transit in mice, even at the low doses of 3.4 mg/kg (1/4 of the dose used by humans).