In order to evaluate anti-inflammatory role of eucalyptol (100, 200, and 400 mg/kg orally), inflammation was induced in rats using 0.1 ml of histamine and 0.1 ml of formaldehyde. Furthermore, in vivo gastroprotective potential of eucalyptol (100, 200 and 400 mg/kg) was determined via the intraperitoneal injection of 25 mg/kg indomethacin as an ulcerative agent and omeprazole (30 mg/kg) orally as a standard. Estimation of biochemical (PGE