inclusion criteria: signing consent to participate in the study having covid related-symptoms within 5 days prior to randomization confirmed diagnosis of covid-19 by rapid antigen test or polymerase chain reaction (pcr) test within 5 days prior to randomization over 50 years old or 18-49 years old and have one or more of risk factors for severe covid-19

inclusion criteria: signing consent to participate in the study having covid related-symptoms within 5 days prior to randomization confirmed diagnosis of covid-19 by rapid antigen test or polymerase chain reaction (pcr) test within 5 days prior to randomization over 50 years old or 18-49 years old and have one or more of risk factors for severe covid-19

inclusion criteria: 1. signing consent to participate in the study 2. having covid related-symptoms within 5 days prior to randomization 3. confirmed diagnosis of covid-19 by rapid antigen test or polymerase chain reaction (pcr) test within 5 days prior to randomization 4. over 50 years old or 18-49 years old and have one or more of risk factors for severe covid-19

inclusion criteria: 1. signing consent to participate in the study 2. having covid related-symptoms within 5 days prior to randomization 3. confirmed diagnosis of covid-19 by rapid antigen test or polymerase chain reaction (pcr) test within 5 days prior to randomization 4. over 50 years old or 18-49 years old and have one or more of risk factors for severe covid-19