IRCT20220711055433N1 IRCT 2022-07-19 Mashhad University of Medical Sciences Effects of Diclofenac on Urethral stricture treatment pain Comparison of Sustained-Released Diclofenac with Placebo on Urethral Dilatation Pain score in two groups called Intervention and Control group, in Urethral Stricture Patients 2020-05-23 anticipated 40 Complete https://irct.ir/trial/64703 interventional Randomization: Randomized, Blinding: Single blinded, Placebo: Used, Assignment: Parallel, Purpose: Treatment, Randomization description: Patients qualified for this clinical trial, were given numbers 01 to 40 considering time of entering the trial. 20 of these numbered patients were allocated to Intervention group using Simple Randomization Method by Fisher and Yates Random Number Table and the other 20 patients were allocated to Control group. So at the time of qualification, the researcher was not aware what each patient's group would be, Blinding description: Each Participant received one envelope containing one Diclofenac tablet or one Placebo tablet similar in color, size, taste and odor to Diclofenac. The envelopes were labeled two different numbers so that researchers knew the content of each envelope and the group each participant was in but the participants themselves were not aware whether they've received Diclofenac or Placebo. 3 Urethral Stricture. Intervention 1: Intervention group: one sustained-release Diclofenac tablet (100mg) Sobhan Darou taken orally 10 hours before urethral dilatation. Intervention 2: Control group: one tablet of Placebo similar to Diclofenac tablet in size, taste and color taken orally 10 hours before urethral dilatation. No - There is not a plan to make this available Justification or reason for not sharing IPD is There is no further information