This study will repurpose medications that have already been approved for use by the Food and Drug Administration (FDA) for other indications to treat non-hospitalized patients that are at least 30 years old with mild to moderate COVID-19. The effectiveness of reducing COVID-19 symptoms will be evaluated by comparing the medication to a placebo or fake treatment with no therapeutic value. Participation will last about 180-days and all study visits are designed to be performed over the phone or remotely. Participants will be compensated for their time and participation in this research study.