IRCT20100614004181N9 IRCT 2019-10-18 Tabriz University of Medical Sciences The effect of combination therapy of human chorionic gonadotropin ampoule (HCG) and Letrozole tablet on spermogram parameters in obese men with idiopathic infertility HCG The comparison the effect of combination therapy of human chorionic gonadotropin ampoule (HCG) and Letrozole tablet with each methods alone on spermogram parameters in obese men with idiopathic infertility 2019-10-23 anticipated 45 Complete https://irct.ir/trial/42901 interventional Randomization: Randomized, Blinding: Not blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Randomization description: En The computerized block randomization (block sizes of 3 and 9) will carried out in this study. An independent clinical epidemiologist, who will not involved in the conduct of the study used a computerized block randomization program (STATA14 software) uses to produce the allocation codes.The randomization sequences will be concealed in lightproof, sealed envelopes.The research assistant opened sealed, numbered, opaque envelopes containing allocation codes. The eligible participants will be randomized to three equal groups (Letrozole tablet, HCG ampoule and combination method) according to the randomization list after signing informed consent form. 2-3 Male idiopathic infertility. Intervention 1: Intervention group: Intervention group 1: HCG ampoule at a dose of 5000 units twice weekly and letrozole tablet 2.5 mg daily for 3 months. Intervention 2: Intervention group: Intervention group 1: HCG ampoule at a dose of 5000 units twice weekly for 3 months. Intervention 3: Control group: Letrozole tablet 2.5 mg daily for 3 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 more information