- subject has a serious chronic disease - subject requiring invasive mechanical ventilation at the time of screening - subject with rapidly(within 3 days) deteriorating clinical condition according to the investigator's opinion - subject who have a record of hiv or aids - subject taking corticosteroids[however, ① steroids being used for the treatment of corona 19 (eg, dexamethasone, etc.), ② topical steroids, ③ patients who are administering inhaled steroids are not eligible for exclusion] - subject taking immunosuppressants/immunomodulators - subject with liver cirrhosis whose child-pugh score is b or c - subject with hyperkalemia (k> 5.1mmol/l) - subject who have liver disease abnormalities with alt or ast > 5 times uln - estimated glomerular filtration rate (egfr) < 30 ml/min - qtc >500ms - subject who have hypersensitivity to the investigational drug - pregnant or lactating females - subject who are not appropriate for the study, as the investigator's opinion

- subject has a serious chronic disease - subject requiring invasive mechanical ventilation at the time of screening - subject with rapidly(within 3 days) deteriorating clinical condition according to the investigator's opinion - subject who have a record of hiv or aids - subject taking corticosteroids[however, ① steroids being used for the treatment of corona 19 (eg, dexamethasone, etc.), ② topical steroids, ③ patients who are administering inhaled steroids are not eligible for exclusion] - subject taking immunosuppressants/immunomodulators - subject with liver cirrhosis whose child-pugh score is b or c - subject with hyperkalemia (k> 5.1mmol/l) - subject who have liver disease abnormalities with alt or ast > 5 times uln - estimated glomerular filtration rate (egfr) < 30 ml/min - qtc >500ms - subject who have hypersensitivity to the investigational drug - pregnant or lactating females - subject who are not appropriate for the study, as the investigator's opinion