IRCT20220830055834N1 IRCT 2023-01-25 Khoram-Abad University of Medical Sciences Clinical trial for a herbal syrup (named Hero) in reduction of COVID 19 respiratory infection Clinical trials of a syrup from three medicinal plants with effective index glycyrrhizin index in reducing inflammation, cough, and duration of hospitalization caused by Covid-19 2022-12-03 anticipated 82 Complete https://irct.ir/trial/66748 interventional Randomization: Not randomized, Blinding: Triple blinded, Placebo: Used, Assignment: Parallel, Purpose: Treatment, Other design features: Two groups are different by the severity of infection, Blinding description: Drug or placebo would be prepared in Khorramabad City and after labelling with a code number and A or B group would be recorded by Secretary of Research of the Lorestan University of(LUMS) and the code would be stored in his safe in his office. The bottles of drugs and placebo are all would be similar in all aspects except number of labels. The bottles then would be send to Yasuj City for Clinical trials. Assignment of recipient of drugs or placebo would be based on Stratified Random Allocation method. This would be based on severity of infection(mild or moderate) , age and sex(8 groups ). In each group there would be random permuted block method for allocation of participants. At the end the data would be analyzed in 2 groups (A and B) by the Biostatistician and the decoder would open the labels for conclusion of the results. 1 Respiratory Infection of COVID-19. Intervention 1: Control group: The routine treatment would be given to this group as well as Placebo which would look and taste like the Hero Syrup. Intervention 2: Intervention group: There would be a routine treatment for this group as well as the Hero Syrup which would be given according to the protocol for 7 days (3 times a day with 350 milligrams/mili liter). No - There is not a plan to make this available Justification or reason for not sharing IPD is Confidentiality of patients