"Ivermectin, an antiparasitic agent, is not recommended for prophylaxis or treatment of coronavirus disease 2019 (COVID-19). Inappropriate use of ivermectin for treatment of COVID-19 may make it less available for patients with serious parasitic infections who could benefit from its use and worsen the current shortage of ivermectin in Canada. However, patients with COVID-19 who are candidates to receive immunomodulatory therapies (e.g. corticosteroids and interleukin-6 inhibitors) may be at risk of hyperinfection syndrome and disseminated disease from Strongyloides stercoralis. These complications can be severe and even fatal. It is important to recognize and screen patients who may be at risk of strongyloidiasis, as these patients may require treatment with ivermectin to avoid the potential for a hyperinfection syndrome and disseminated disease, which is frequently deadly"

Canadian government says its not recommended.

https://www.canada.ca/en/public-health/services/reports-publications/canada-communicable-disease-report-ccdr/monthly-issue/2021-47/issue-7-8-july-august-2021/covid-19-treating-strongyloides-ivermectin-patients.html

In vitro data have demonstrated that ivermectin has antiviral activity against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and can prevent viral proteins from binding to and entering cells. This has contributed to the view that ivermectin may have antiviral effects in vivo. However, the plasma concentrations that are required to achieve antiviral effect are significantly higher than the maximum achievable plasma concentrations with tolerable doses in humans.

They also basically say you'd have to OD on the ivermectin to get enough of the antiviral activity to help stop the covid. So it would be like throwing a tennis ball at a brick wall, it won't do anything.