brown tongue???

my tongue has always tended to become white, and scraping it day by day it would become of a very healthy pink.

a few days ago i started using a hydrogen peroxide mouthwash. i don't know if it's a coincidence or not...

now my tongue is brownish, and especially brown in the "lane-splitter". scraping won't get rid of the brownish stuff...

i saw some posts where they relate this to some thyroid disorder: http://index.healthboards.com/thyroid/530004/brown-tongue/

have i fucked up my thyroid by taking too much KI?

or, has the hydrogen peroxide killed some bacteria and strengthened some other bacteria in my mouth?

thank you in advance!

possible you killed some good bacteria on your tongue, stop HP for a few days, should come back pink.