IRCT20140824018915N9 IRCT 2021-06-04 Mashhad University of Medical Sciences The effect of captopril on definitive patients with coronavirus pneumonia Evaluation the effect of captopril in the treatment of definitive patients with COVID-19 2021-06-05 anticipated 40 Complete https://irct.ir/trial/56384 interventional Randomization: Randomized, Blinding: Single blinded, Placebo: Not used, Assignment: Parallel, Purpose: Supportive, Randomization description: Simple randomization with table of random numbers available at ''www.randomization.com'' website will be used. Numbers will be placed in sealed envelopes and each envelope is assigned to one participant placing them in one of the two groups, Blinding description: Nurses recording the status of patients will be unaware of the intervention and control groups. 3 Coronavirus pneumonia. Intervention 1: Intervention group: In addition to the usual treatment regimen, patients receive captopril at a dose of one 25 mg tablet every 8 hours for 2 weeks from the start of treatment. Intervention 2: Control group: Patients in this group receive only routine treatment. 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 After finishing work, consult with colleagues and it will be published if all members agree.