IRCT20210716051908N1 IRCT 2021-10-10 Tehran University of Medical Sciences Evaluation of the effect of vitamin D supplementation in reducing vertigo attacks and severity in Meniere’s patients, A Randomized Double-Blind Clinical Trial with Placebo-Controlled Evaluation of the effect of vitamin D supplementation in reducing vertigo attacks and severity in Meniere’s patients, A Randomized Double-Blind Clinical Trial with Placebo-Controlled 2021-11-06 anticipated 60 Complete https://irct.ir/trial/57646 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Used, Assignment: Parallel, Purpose: Supportive, Randomization description: Patients will be randomly assigned to one of two groups of vitamin D supplements and placebo based on the permuted block randomization method, which will use 6 blocks, Blinding description: A person other than the researcher who does not have information on how to perform and the purpose of the study will use a list of random numbers to encode the vitamin D supplement and placebo and will be numbered according to the list so that the researcher does not know the type of supplements. Participants will also have no information about the contents of the package. 3 meniere disease. Intervention 1: Intervention group: In addition to receiving the usual Meniere treatment (betahistine) , Pearl Vitamin D supplement 50,000 units, one per week, after lunch and for 8 weeks will be prescribed. Intervention 2: Control group: The placebo, which is exactly the same as the vitamin D supplement in shape and color, will be delivered once a week, after lunch, for 8 weeks. No - There is not a plan to make this available Justification or reason for not sharing IPD is No further information.