Okay - what countries are using it. Provide some solid sources please (we will mock you if it is some conspiraloon crap with no links to primary sources).
There is no vast conspiracy to deny it to patients - if that were the case why is Oxford Uni trying to find out if it actually works or not?
Last I heard some Indian States, Slovakia, Mexico, Czech Republic, Bulgaria, although I believe the Czech Republic and Slovakia was maybe an emergency period and not permanent.
I've never suggested a conspiracy, I've said it once and I will say it again, the authorities must have their reasons. What I don't understand is the time it has taken to start serious trials and the co-ordinated horse dewormer narrative which suddenly hit worldwide headlines a short while ago based on a report from a small town in Oklahoma with less than 9,000 people living there. This shitshow started from that one observation.