Whatever you do, proceed with extreme caution and do not take anything meant for animal use.
“However, pharmacokinetic and pharmacodynamic studies suggest that achieving the plasma concentrations necessary for the antiviral efficacy detected in vitro would require administration of doses up to 100-fold higher than those approved for use in humans.”
***
“Ivermectin is not approved for the treatment of any viral infection, including SARS-CoV-2 infection. The FDA issued a warning in April 2020 that ivermectin intended for use in animals should not be used to treat COVID-19 in humans.”
https://www.covid19treatmentguidelines.nih.gov/antiviral-therapy/ivermectin/