Inclusion Criteria:  Participant must be aged 12 years or older at time of consent AND at high risk of progression of COVID-19 or ≥ 55 years old Participants must have a positive SARS-CoV-2 test result and oxygen saturation ≥94% on room air and have COVID-19 symptoms and be less than or equal to 7 days from onset of symptoms  Exclusion Criteria:  Currently hospitalized or judged by the investigator as likely to require hospitalization in the next 24 hours Symptoms consistent with severe COVID-19 Participants who, in the judgement of the investigator are likely to die in the next 7 days Known hypersensitivity to any constituent present in the investigational product