Dorema aucheri is a plant from the Apiaceae family, which has several compounds such as flavonoids and kumarines. Flavonoids have antitumor, anticancer and estrogenic properties. Antiandrogenic properties of kumarines are also known. The aim of this research is to examine the Dorema aucheri hydroalcoholic extract effects on SOD and GPX activities and serum concentration of vitamins E and C. Sixty adult male Wistar rats weighing about 200 to 220 g were divided into four groups of fifteen. The control group did not receive any drug. The other three experimental groups including low (100 mg/kg BW), medium (200 mg/kg BW) and maximum (400 mg/kg BW) received Dorema aucheri hydroalcoholic extract daily for 28 days orally. After 14 and 28 days all animals in the different groups were weighed and their blood collected, and SOD and GPX activities, and vitamin E and C concentrations were measured by validated standard methods. The results showed that in the short term, SOD and GPX activities, as well as vitamin C concentration increase depending on the dose, but in the long term these parameters decrease proportional to the increase of the dosage. Vitamin E concentration had no significant changes during our study.