Introduction: Pain is the most common cause which leads people to medical centers. Pain is a mental perception and the people’s sensation of painful events and their reactions greatly differ from one another. “Mastalgia” is among the most prevalent women’s complaints and concerns. The aim of the present study is to investigate the effects of Evening Primrose and Vitex Agnus on pain scale of the women with cyclic Mastalgia.

  Methods: This study is a clinical and triple-blind trial with a control group. The subjects include 210 women being selected through simple sampling and distributed in three 70-subject groups randomly. The medications included Vitex Agnus tablets for the first group Evening Prime rose for the second group and Vitamin E for the control group for a period of two months. The criterion of chest pain has been measured before and two months after intervention through filling a questionnaire and the collected data were compared. The data were then analyzed by SPSS software, one-way ANOVA and paired T-test.

  Results: The mean pain criterion for the first group was 5/67±1/411 before the intervention and 4/51±0/864 after the intervention respectively 5/70±1.448 and 3/70±1.012 for the second group and decreased to 5/70±1.438 and 4.84±1.099 for the control group (p<0/05).

  Conclusion: The results demonstrated that Vitex Agnus has some positive effects on the pain scale of the women’s with Mastalgia and thus can be used as an effective clinical method.