safety:
Ivermectin is safe and effective for the treatment of parasites at a dose of 0.2 mg/kg once. It has been proven safe at that dose.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7297470/
The FLCCC advocates giving 3x the normal dose for a minimum of 5 days (longer if not recovered). There is no data that ivermectin is safe at a minimum of 15x the labeled dosing
https://covid19criticalcare.com/wp-content/uploads/2021/01/FLCCC-Alliance-MATHplus-Protocol-ENGLISH.pdf