Only proper clinical medical testing will show if this is a good treatment or not.
Trump's promotion of it is irrelevant to the usefulness of it.
I do wish the White House would be more proactive, rather than reactive, and the president would step aside from the podium and let the professionals (and the coordinator Pence) handle the public interface. He keeps letting his petty grievances get in the way of a coherent message to the American people and that will cost lives.
I was never particularly impressed with the notion that novices to government made good government executives (presidents, governors, mayors, etc), but I never imagined any businessman would be so poor at management as Trump is.