IRCT20230304057611N1 IRCT 2023-11-04 Shahre-kord University of Medical Sciences Investigating the effect of magnesium on uterine contractions in woman with repeated implantation failure referred to infertility clinic Investigating the effect of magnesium on uterine contractions in woman with repeated implantation failure referred to infertility clinic 2023-12-06 anticipated 30 Complete https://irct.ir/trial/69537 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Used, Assignment: Parallel, Purpose: Treatment, Randomization description: The researcher assigns a number to the patients using the random allocation rule method and then puts the cards on which the patient's number is written in an envelope in a shuffle. In this method, according to the size of the sample, two color cards, red and blue or labeled A and B, with the same number equal to the total size of the sample (60) are put inside the envelope, then the qualified people who participants in the study will randomly remove one of the cards from the envelope and according to the researcher's definition, if they pick up the red or A card, they will enter the intervention group (30) and if they pick up the blue or B card, they will enter the control group (30), Blinding description: The patient and the researcher do not know about the procedure. Medicines will be pre-prepared with labels A and B, which will be categorized and prepared by the statistics consultant and delivered to the case and control groups. 3 Infertility. Intervention 1: Intervention group: One daily magnesium citrate tablet (300 mg, Sajpod company) for two months. Intervention 2: Control group: For the patients of the control group, a placebo pill supplied by the same pill manufacturing company (without any special medicine) will be prescribed for two months. No - There is not a plan to make this available Justification or reason for not sharing IPD is no more information.