It's been so widely used that you have doctors who now publicly swear by it, including the guy in this thread who does indeed appear to be who he says he is. You literally have posters on this very board who have been treated with it, they claim successfully.
From my personal perspective, all the original US studies supposedly debunking it were poorly aimed, particularly that VA one, which has been widely cited.
Nearly from day one, the best window touted for this treatment was early, but every one of the studies that were thrown up by the media during the early months ignored that, and they all loved to harp on the cardiac risks, which have been known and identified for literally decades.
Combine that with a lack of a full-fledged, organized US study to point to, and it looks really fishy. Really, really fishy.
It may not be a cure, or even really helping compared to other drugs, but to the objective observer the case is absolutely not open and shut.