Others claim it is not. Doctors are prescribing this all over the world. I am not even hearing anecdotal evidence of deaths or great harm being caused by it.
I do not expect studies will show that Hydroxy cures Covid. I do expect studies to confirm that it hinders progression of Covid in many individuals enough to keep them off ventilators and alive without causing significant harm that would offset the value. In other individuals, it will fail to help.
Maybe it is just a great big coincidence that hospitalizations, ICU, and Intubations are dropping globally right after Hydroxy use accelerated.
It might be. It might not be.