Did you ever try iodine? It made me so dizzy I couldn't do it for more than 2 days. That was only with a few drops.
Curious if you have tried Iodine and your reaction?
I question if Iodine reaches the colon? How far into the intestinal tract will it go?
For people that have all their good flora wiped out Iodine will not be enough. The Gut flora has to be restored. For people with more severe cases, trying to restore/rebalance gut flora can become extremely difficult.