Ketamine IV in Mexico City

That is illegal and dangerous

I know, sorry, I have to clarify the point. There were a couple of hospitals that began clinical trials, but since COVID and the fentanyl crisis, there is a shortage of ketamine. There were reports of clinics using IV ketamine, but it was veterinary ketamine. So be careful, right now it is ilegal and dangerous because there is shortage of ketamine approved for human use

Is there a registry of clinical trials in Mexico, as in the USA?

yes https://siipris03.cofepris.gob.mx/resoluciones/consultas/conwebregensayosclinicos.asp

Oh okay okay thank you so much for letting me know. That's pretty scary.