IRCT20120215009014N417 IRCT 2022-02-19 Hamedan University of Medical Sciences Comparison of the effect of three drugs clomiphene, letrozole and gonadotropin on the dominant follicle and pregnancy in infertile women with polycystic ovaries Comparison of the effect of three drugs clomiphene, letrozole and gonadotropin on the dominant follicle and pregnancy in infertile women with polycystic ovaries: a single-blind randomized controlled trial 2022-04-04 anticipated 384 Complete https://irct.ir/trial/62005 interventional Randomization: Randomized, Blinding: Single blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Randomization description: Random assignment of the patients to the intervention groups through the drawing of lots. To do this, we prepare three sheets and write the drug names (clomiphene, letrozole and gonadotropin) on the sheets. Then, by referring each patient, one of the sheets will be randomly taken without replacement and the patient will be assigned to the intervention groups. This process will be repeated until we reach the sample size, Blinding description: The physician who will examine the patients will not be aware of the intervention. Thus, the trial will be run as single-blind. 3 Infertile women. Intervention 1: Intervention group 1:Tablet Clomiphene (manufactured by Iran Hormone Pharmaceutical Co.) 50 mg every 12 hours for 5 days. Intervention 2: Intervention group 2:Tablet Letrozole (manufactured by Iran Hormone Pharmaceutical Co.) 2.5 mg every 12 hours for 5 days. Intervention 3: Intervention group 3:Ampulla Gonadotropin (manufactured by Empower Pharmaceutical Co.) 150 units daily for 5 days. 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 It depends on the situation and the results of the study as well as the approval of the financial supporting organization.