IRCT20200105046009N2 IRCT 2020-07-12 Babol University of Medical Sciences effect of plantago major on severity of cought The efficacy of Plantago major syrup on severity of cough in acute bronchitis 2020-08-05 anticipated 80 Complete https://irct.ir/trial/44759 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Used, Assignment: Parallel, Purpose: Treatment, Randomization description: Drugs in two categories (drug and placebo) are made by Sanabel Daru Co. and sent to the statistician. Randomization is done using permuted blocks randomization. The size of the blocks is considered 4. All possible combinations are determined from a sequence of 4 of the two drugs (6 combinations), and then their sequence is determined using a table of random numbers. The statistician encodes them and gives them to the researcher blind. Unlock codes will be done after the end of the study. In case of side effects, the drug code will be unlocked, Blinding description: Placebo syrup and medicine will be prepared in the same form, label, taste, and odor, by the Sanabel DaruCo. The only one who knows the identity of the syrups is the biostatistician of the study. 3 Brunchit. Intervention 1: Intervention group: Plantago major syrup containing extract of the seed of Plantago major, made by Sanabel Daru Company is used. Syrups are given to the patient on a weekly basis in 300 cc pets. The patient takes 30 ccs orally (10 ccs three times every 8 hours) daily for 10 days. Intervention 2: Control group: Placebo syrups with the same taste, color, smell, shape and label of the Plantago major syrup will be made by Sanabel Daru Company. Syrups are given to the patient on a weekly basis in 300 cc pets. The patient takes 30 cc orally (10 cc in three times, every 8 hours) daily for 10 days. 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 There is no further information