Inclusion Criteria:  Consenting adults (age ≥18) hospitalised with the following criteria will be included in the study:  Probable or confirmed COVID-19 regardless of severity, i.e., mild, moderate and severe cases Not already receiving any of the study drugs Without known allergy or contraindications to any of the study drugs (in the view of the physician responsible for their care), and Without anticipated transfer within 72 hours to a non-study hospital.  Exclusion Criteria:  Patients with contraindications to any of the study drugs.