coated tongue so stubborn

Hi
I have had a coated tongue for around 12 months no other real symptoms, I have had a history of parasites which i did a cleanse a few years back, I also recently finished a 3 month parasite cleanse, have completed 8 Liver Flushes only got stones on the last four. have treated it as being candida, have taken lots of antifungul herbs, probiotics etc...done the candida diet for a number of months...but still have the coated tongue - I have experienced some heavy die off over this time possibly from the candida but can't be sure if it was candida...
I am at a loss...I do notice when i do a a Liver Flush my tongue gets very very coated..so I am thinking this coated tongue is implicated in my liver or lack of bile or something..its just strange i have no other typical candida symptoms...

thanks
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