1. Male or female patients at least 18 years old 2. Signed informed consent 3. Admitted to hospital for treatment of COVID -19. The hospitalization must be for medical and not for social reasons. 4. Patient within 7 days from symptom onset and within 72 hours after laboratory diagnosis (SARS-CoV-2 RT-PCR) 5. Mild to Moderate COVID-19 disease defined as clinical status category 3 or 4 on the WHO 9-point ordinal scale Hospitalized, no oxygen treatment Oxygen by mask or nasal prongs 6. Presence of at least 1 symptom characteristic for COVID-19 disease, e.g. fever, cough, sore throat, myalgia, fatigue, GI disorders, skin lesions etc 7. In women of childbearing potential, negative pregnancy test and commitment to use contraceptive method throughout the study

1. Male or female patients at least 18 years old 2. Signed informed consent 3. Admitted to hospital for treatment of COVID -19. The hospitalization must be for medical and not for social reasons. 4. Patient within 7 days from symptom onset and within 72 hours after laboratory diagnosis (SARS-CoV-2 RT-PCR) 5. Mild to Moderate COVID-19 disease defined as clinical status category 3 or 4 on the WHO 9-point ordinal scale Hospitalized, no oxygen treatment Oxygen by mask or nasal prongs 6. Presence of at least 1 symptom characteristic for COVID-19 disease, e.g. fever, cough, sore throat, myalgia, fatigue, GI disorders, skin lesions etc 7. In women of childbearing potential, negative pregnancy test and commitment to use contraceptive method throughout the study