So far I think (even though successful) intravenous vitamin C is not FDA approved protocol. Of course not, they are the FDA
The FDA would not have control as vitamin C is not a controlled substance or drug. Sepsis therapy would be under the hospitals protocol which is controlled by the staff intern doctors, charge nurses, managers, and lawyers. The issue is for doctors that go outside of hospital protocol. This happens all the time. My daughter was an ICU nurse at a major hospital and now works Quality and reviews patient care and doctors orders and when they deviate from procedures. Most doctors stay in the protocol to avoid legal trouble for them and the hospital. Once the protocol has been followed and there is nothing left to try there would be no real legal jeopardy for trying other therapy with the patients or families or power of attorney care givers choice and permission. The real challenge is having the word get out and hospitals begin to adopt the option of this new protocol.
The FDA doesn't approve anything that actually works and is cheap. No money for big pharma in it.
They'll only approve stuff that'll kill you that's made by Merck.