Active: sodium Fluoride. Inactive (typical per flavor): Sorbitol, Water, Hydrated Silica, Glycerin, PEG-32, Silica, Cellulose Gum, Titanium Dioxide, sodium Lauryl Sulfate, Aroma (varies by flavor), sodium Saccharin, Citric Acid, Limonene, Cinnamal, Eugenol (depending on the variant).