(1) Age 16 or over at time of consent (2) Exhibiting symptoms associated with COVID-19 (3) Positive for SARS-CoV-2 on valid COVID-19 test (4) Point 1, 2, 3, or 4 on the WHO COVID-19 ordinal severity scale at time of randomisation. (Asymptomatic with postiviepositive COVID19 test, Symptomatic Independent, Symptomatic assistance needed, Hospitalized, with no oxygen therapy) (5) Have >=10% risk of death should they be admitted to hospital as defined by the ISARIC4C risk index: https://isaric4c.net/risk (6) Able to provide written informed consent (7) Negative pregnancy test (women of childbearing potential*) (8) Able to swallow oral medication

(1) Age 16 or over at time of consent (2) Exhibiting symptoms associated with COVID-19 (3) Positive for SARS-CoV-2 on valid COVID-19 test (4) Point 1, 2, 3, or 4 on the WHO COVID-19 ordinal severity scale at time of randomisation. (Asymptomatic with postiviepositive COVID19 test, Symptomatic Independent, Symptomatic assistance needed, Hospitalized, with no oxygen therapy) (5) Have >=10% risk of death should they be admitted to hospital as defined by the ISARIC4C risk index: https://isaric4c.net/risk (6) Able to provide written informed consent (7) Negative pregnancy test (women of childbearing potential*) (8) Able to swallow oral medication