Artificially flavored. Prevents over 35% of stains (in a 12 week clinical trial). Whitens teeth & helps prevent stains. Chewing 2 pieces of Trident White sugar free gum after eating and drinking helps: Whiten teeth in as little as 4 weeks; prevent stains (in a 12 week clinical trial). 35% fewer calories than sugared gum. Calorie content for this serving size has been reduced from 8 to 5 calories.