You set the record here for Fentanyl dose rate- is Michael Jackson's doc your pain management specialist? The highest dose rate I am aware of here on the forum has been around 175-200 mcg. 500 mcg is the maximum dose that a human being can get and it is typically reserved for pancreatic cancer patients which is excruciatingly painful in the terminal phase.

With that dose rate it is imperative that you have a very specifically tailored phase out or you could have convulsions and/or death.

Thrush is extremely common when the pH factor is knocked out of balance because of treatment. I am 8 years out and had thrush last year (and I have normal salivary function). All of us have candidiasis (yeast) present in our mouths and the slightest pH balance change will cause them to bloom. I was on maintenance doses of Diflucan for months post Tx.

Radiation and chemo beat the tongue up pretty good as well and mouth and tongue sores take a long time to heal.