IRCT20170513033941N53 IRCT 2019-03-29 Arak University of Medical Sciences Effect of vitamin D supplementation in the treatment of polycystic ovary syndrome The effects of vitamin D supplementation on hormonal profiles, inflammatory factors, oxidative stress biomarkers and gene expression related to inflammation in women with polycystic ovary syndrome candidates for IVF 2018-12-17 anticipated 40 Complete https://irct.ir/trial/38409 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Used, Assignment: Parallel, Purpose: Treatment, Randomization description: To decrease potential confounding effects, all participants will have stratified randomization according to BMI (<25 and ≥25 kg/m2) and age (<30 and ≥30 y). Then, participants in each block will be randomly allocated into two treatment groups to take either supplements or placebo. Randomization will be done by the use of computer software, Blinding description: Randomization and allocation will be concealed from the researchers and participants until the final analyses are completed. Another person at the Kosar clinic, who is not involved in the trial and not aware of random sequences, will be assigned the participants to the numbered bottles of capsules. 3 Polycystic ovary syndrome. Intervention 1: Intervention group: 50000 IU vitamin D every weeks (Zahravi, Tabriz, Iran), for 8 weeks orally. Intervention 2: Control group: Placebo (Barij Essence, Kashan, Iran) every weeks, for 8 weeks orally. 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 Undecided - It is not yet known if there will be a plan to make this available