The orange tongue takes up many precious doctor"s minutes for me because I have a horrendous taste in my mouth as well. When in the first round it cultured for yeast nystatatin and fluconazole were used. My tongue has had a range of color from orange, orange with a coating of white, a heavier coating of white (still orange in places), green and black. The chlortimazole worked for a while the taste had been reduced and the color was just orange. Will keep updating, as there are more doctors to be seen with regards to this particular puzzle.