Have you tried Lufenuron to kill the fungus? Iodine
is great but you need something that actually works on the life cycle of the fungus.
I have tremendous success with Lufenuron myself.
It is also used to treat Leachmaniosis.
I've had no ill effects from the Lufenuron. I do recommend that you start slow as I took just 400mg (standard dose is 9g) and had severe Herx reaction.
I now do 1 gram a day for 5 days then take 7 days off.