IRCT2016060728313N1 IRCT 2016-08-12 Islamic Azad University Of Ardabil Branch The effect of Fennel on treatment Dysmenorrhea Comparison of the effect of Fennel and Gelofen on the severity of primary Menstrual pain 2016-06-09 anticipated 72 Complete https://irct.ir/trial/22997 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment. N/A Primary Dysmenorrhea. Intervention 1: Medicine and registration form (for before and after the use of medicine) for the first cycle will be distributed and information on how to take the medicine is presented to everybody in Experimental Group. The Experimental Group will use Fennel Drop in three first day of Menstrual cycle, 3-5 drops in tea or water 3 times a day (every 8 hours) in 3 continuous series of Menstrual cycles. At the end of each cycle by fellow researchers collected clinical status and drug registration forms and will distributed new forms and medicine. The samples will be followed-up after three consecutive cycles. Verbal Multidimensional Scoring System to determine the severity of Menstrual pain is used to determine the presence or absence of symptoms associated with pain will be determined as well as through a Questionnaire. Intervention 2: Medicine and registration form (for before and after the use of medicine) for the first cycle will be distributed and information on how to take the medicine is presented to everybody in Control Group. The Control Group also use Gelofen Capsules at a dose of 400 milligram 4 times per day with meals or a glass of water in the first 3 days of the Menstrual cycle. At the end of each cycle by fellow researchers collected clinical status and drug registration forms and will distributed new forms and medicine. The samples will be followed-up after three consecutive cycles. Verbal Multidimensional Scoring System to determine the severity of Menstrual pain is used to determine the presence or absence of symptoms associated with pain will be determined as well as through a Questionnaire.