This condition started around 5/20/09. It's more of a film, and no matter how much I brush my teeth, tongue and mouth it continues to persist. There is no visible coating. I did go to a Dr., because intially, I thought it might be a mild case of thrush. But after 10 days on oral nystatin, it is no better. The roof of my mouth is the worst, but the film coats my tongue and teeth as well. I am not taking any new medications, but have been taking Synthroid, Zyrtek, & Ambien for years. It has affected my taste somewhat, and my mouth never feels clean, even directly after brushing. No other symptoms to speak of, other than I've also had a sudden onset of hot flashes 2 - 4 times an hour which began about 6 weeks ago. But I just chalked that up to pre-menopause.