Containing Zinc To Neutralise Bad Breath Clinical research has recently determined that the tongue harbours most of the bacteria that can cause bad breath and gum disease. And there's no better tool to conveniently, comfortably and effectively reduce the amount of bacteria and debris on the tongue than Dr. Wieder's Original Tung-Brush® and Wieder's Tung Gel. Place a small amount of Tung Gel on your Tung Brush. Scrub your tongue (not too hard now!) and reach as far back on the tongue as you can without gagging. Sorbitol, Hydrated Silica, Water, PEG-12, Sodium Lauryl Sulfate, Cellulosae Gum, Sodium Benzoate, Sodium Saccharin, Methylparaben, Zinc Chloride, Glycerin, Xylitol, Blue 1, Flavour. Avoid swallowing. In case of accidental ingestion beyond normal use quantities, consult a doctor.