This research is a descriptive analytical study which been carried out for the purpose of study of application period, causes of the discontinuation and the problems arising from the application of the edible pills as a pregnancy preventive method among the women of Tehran (1989). 986 women have been studied in two groups as follows: A) The women who have used the edible pills (737 women). B) The women who are currently using the pills (249 women). Of 95.8% of the total (986 persons) have been informed the method of pills use and 40.6% have indicated pills as their favorite method. Mentall disorder was the most common complication resulted from application of the pills. Investigation also indicates that highest percentage of duration of use was above four years (33%). Among the reasons which resulted in the cessation of the method for more than one month, medical reasons have been mentioned by most of the persons studied