IRCT20170415033428N5 IRCT 2020-06-29 Mashhad University of Medical Sciences Effect of Prunus cerasus on nephrolithiasis in children Comparison of the effect of cherry concentrate (Prunus cerasus) and polycitrate on the number and size of urinary stones in children aged one to eighteen years old 2020-07-22 anticipated 60 Complete https://irct.ir/trial/33270 interventional Randomization: Randomized, Blinding: Not blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Randomization description: Simple personal randomization will be done using random numbers table and www.randomization.com website. Randomization concealment will be done using closed envelopes. The envelopes will be prepared and printed by one of the members of the research team and random numbers with the help of Randomaization.com and will be placed inside the envelope. The envelopes are closed and the contents cannot be seen from the outside. Then, the purpose of the study will be explained to the person who meets the inclusion criteria and if the person wishes and signs the informed consent form, takes an envelope and then opens it and enters the intervention or control group based on the contents of the envelope. 3 urolithiasis. Intervention 1: Intervention group: Cherry concentrate contains Melatonin made by Khoshe-sorkh Shargh Company, 1.5 cc per kg body weight orally, once daily for two months. Intervention 2: Control group: poly citrate made by Sepidaj pharmaceutical Company, 1 cc per kg body weight orally, once daily for two months. Undecided - It is not yet known if there will be a plan to make this available Justification or reason for indecision in sharing IPD is No information is available