IRCT20180425039418N5 IRCT 2019-03-04 Zahedan University of Medical Sciences vitamin A effect on post bronchiolitis wheezing Determining the effect of vitamin A on persistent wheezing of infants with bronchiolitis admitted to Ali ibn Abi Talib hospital of Zahedan 2018-12-22 anticipated 60 Complete https://irct.ir/trial/37306 interventional Randomization: Randomized, Blinding: Not blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Randomization description: The random blocks method was used (based on the preliminary estimate of the number of clients in December 2016 and the first 3 months of 2018). 2-3 Condition 1: Bronchiolitis. Condition 2: Post Bronchiolitis Wheezing. Intervention 1: "Intervention group:" Includes 30 infants from one month to two years old with the first episode of Bronchiolitis referring to Ali ibn Abi Talib Hospital in Zahedan, prescribed with 5,000 units per kilogram body weight of injected vitamin A. Intervention 2: Control group: No additional work. No - There is not a plan to make this available Justification or reason for not sharing IPD is There is no information yet