I believe NIH links to a Brazil study and the results do not look good.
https://www.covid19treatmentguidelines.nih.gov/therapies/antiviral-therapy/ivermectin/
Ivermectin | COVID-19 Treatment Guidelines
Review clinical data on the use of ivermectin for the treatment of COVID-19.
https://www.covid19treatmentguidelines.nih.gov/therapies/antiviral-therapy/ivermectin/BUT, usage statistics of HCQ and Ivermectin is indisputable. It works. Covid 19 trended upwards after the Olympics and Japan health minister recommended doctors prescribe Ivermectin and they did not have any long lasting outbreak. Africa routinely uses antiviral medicine and they did very well against Covid -19. We cannot trust the NIH, FDA, CDC, Big Pharma. You can probably get better health advice reading Youtube comments on natural remedy videos.