I work with a clinic that uses it on patients, mainly orally. I personally don't have any experience with it but I see the testimonies and I've been reading into it a bit for the last few months. My take is that the best use case for it is injecting it directly into tumors. there's a Chinese researcher, Xuewu Liu, who is seeing great results and is looking to create a standardized protocol for treating certain cancers.
So basically, I am not seeing terrible or irreversible health outcomes for those taking it, like the FDA states, and there seem to be promising results in certain conditions. I actually can't find 2 FDA articles that spoke up against the dangers of chlorine dioxide, I even asked AI to help me find it, it would give the supposed link but when opening it, I'd get "page not found". So that's interesting.