This elemental diet is specifically for SIBO so doesn't have any artificial sweeteners which would feed bacteria. The worst thing in it is the corn based glucose. I am coming off it now (thankfully) and starting to supplement with food.
I'm already seeing some symptoms return that Iodine cleared (ie, very dry skin). Now with a little food, I'm tolerating the 50mg Iodoral so I guess at worst I do a little painting on the skin and stick with 50mg for a month or two before I can add SSKI back in once my gut starts acting better. I know a lot of people who stay at that dose for awhile anyhow, so I guess it's not super low. Even with my skin dry, I haven't seen other symptoms like extreme brain fog come back. I am weak and tired, but I'm sure that's due to starvation and should go away once I can get back > 1200 calories.