I've also read up on it and used Claude for my own personal tapering. From what I gather, hydrocortisone is beneficial when a fast taper is necessary or when tapering hits a road block. In my case I'm doing a fast taper due to an SMM diagnosis. It is also my understanding that whereas we in the US are prescribed prednisone, those in the UK are prescribed prednisolone. There's a difference but I'm not sure what that is because I'm on prednisone.