IRCT2016012626211N1 IRCT 2016-05-25 adjutancy of Research and Technology, Islamic Azad University of Shahrood The effect of tamsulosin on ureteral stones expulsion Effect of tamsulosin on lower ureteral stone expulsion 2016-04-13 anticipated 100 Complete https://irct.ir/trial/21774 interventional Randomization: Randomized, Blinding: Single blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment. 3 kidney stone. Intervention 1: Intervention: Oral tamsulosin 4 mg Intervention method: Prescribed tamsulosin Morning, and for prescribing it until the stone is Or in case of expulsion for up to four weeks after initiation of the study. All patients from both groups to allow the use of 100 mg indomethacin treatment for symptomatic PRN (in case of unbearable pain) is given. All patients from both groups emphasized that drink 2 liters of water daily. Intervention 2: Control:Non-use of tamsulosin oral 4mg Control Method: All patients from both groups to allow the use of 100 mg indomethacin treatment for symptomatic PRN (in case of unbearable pain) is given. All patients from both groups emphasized that drink 2 liters of water daily.