fa اثر هایپریکوم پرفوراتوم بر اضطراب General پژوهشي Research Article Background and Aim: Anxiety is among the most comm on mental disorders. Nowadays, complementary medicines has become a part of every treatment and many of patients, in order to reduce the side effects and cost of treatment are inclined to use it. Hypericum perforatum is traditionally used for the treatment of many physical and psychological diseases. The aim of the present study was to determine the effect of hypericum perforatum (hypiran) on the anxiety of students living in Karaj universities dormitories.   Materials and Methods: This study was a randomized controlled clinical trial that was conducted on the students living Karaj universities dormitories. The instruments used for data collection included: a self-administered form and Spilburge’s anxiety questionnaire. Spilburge’s anxiety questionnaire was filled out by students, as a screening test for anxiety. After screening 180 students were randomly divided into two equal groups, control group and experimental group. Each of the subjects in the experimental group was administrated 60 daily drops of hypiran for 2 months. Anxiety was evaluated before and after 2 months in both of the groups. The obtained data was analyzed using SPSS software, statistical tests paired- t test, and t test for independent groups and P Hypiran,H ypericum perforatum,Anxiety 179 185 http://mcj.bums.ac.ir/browse.php?a_code=A-10-1-562&slc_lang=fa&sid=1 Niloofar Erfany نیلوفر عرفانی 10031947532846004270 10031947532846004270 Yes Instructor, Alborz University of Medical Sciences, Health Center of Shahid Eskandari, Alborz, Iran. Email: niloofar.erfany@yahoo.com کارشناس ارشد پرستاری، دانشگاه علوم پزشکی البرز، مرکز بهداشتی درمانی شهید اسکندری، البرز، ایران. تلفن: 02632558920 ایمیل: niloofar.erfany@yahoo.com Shirin Hejazi شیرین حجازی 10031947532846004271 10031947532846004271 No Instructor, Faculty of Nursing & Midwifery, Islamic Azad University, Tehran Medical Branch, Tehran, Iran کارشناس ارشد پرستاری، مربی گروه پرستاری، دانشکده پرستاری و مامایی دانشگاه آزاد اسلامی، واحد پزشکی تهران ، ایران Sharareh Zeighami Mohammadi شراره ضیغمی محمدی 10031947532846004272 10031947532846004272 No Instructor, Faculty of Nursing & Midwifery, Islamic Azad University, Karaj Branch, Alborz, Iran کارشناس ارشد پرستاری، مربی گروه پرستاری، دانشکده پرستاری و مامایی، دانشگاه آزاد اسلامی واحد کرج، البرز، ایران Mohammad Hossein Salehi Surmaghi محمد حسین صالحی سورمقی 10031947532846004273 10031947532846004273 No Associate Professor, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran دانشیار، متخصص گیاه دارویی، دانشکده داروسازی، دانشگاه علوم پزشکی تهران،ایران