This study will screen for the activity of a variety of non-prescription approaches for the treatment of non-hospitalized adults recently diagnosed with COVID-19. This will be a randomized, blinded placebo-controlled study with respect to the active treatment (chlorine dioxide) vs placebo, and randomized open-label with respect to a non-prescription medication (famotidine) and supplements including zinc, EGCG and lactoferrin. Treatment will last for 7 days.
