Ivermectin was banned for covid treatment because it was it was deemed to be inconclusive we now know it doesn't work.
https://www.crikey.com.au/2022/07/22/crowdfunded-clinical-trial-ivermectin-covid19/
This May 2022 so its a bit more recent if you hunt around enough on the internet you will find a study that supports you views but the recent overwhelming evidence is that it doesn't work. .
https://www.nejm.org/doi/full/10.1056/NEJMoa2115869
