The Sensodyne Tartar Control + Whitening Toothpaste (145g / 5.1 oz) is a multi-benefit toothpaste primarily designed for sensitive teeth, offering additional protection against tartar and surface stains.The common size in the US market is often labeled as 4.0 oz, 4.3 oz, or 6.5 oz, but the specific formulation generally applies to this product line. The 145g volume is approximately 5.1 ounces.Key Product Details (USA Formulation)FeatureDetailPrimary UseToothpaste for sensitive teeth and cavity prevention.Active IngredientsPotassium Nitrate (5%): Anti-hypersensitivity agent to relieve tooth sensitivity. Sodium Fluoride (0.243% or 0.25%, $0.15\%$ w/v Fluoride Ion): Anti-cavity agent.BenefitsSensitivity Relief: Builds increasing protection against painful sensitivity. Tartar Control: Helps remove and prevent tartar build-up with regular brushing. Whitening: Helps whiten teeth by removing surface stains. Cavity Protection: Contains fluoride to aid in the prevention of dental cavities.Recommended UseAdults and children 12 years of age and older. Brush thoroughly for at least one minute, twice daily (not more than three times).Inactive Ingredients1Water, Hydrated Silica, Sorbitol, Glycerin, Pentasodium Triphosphate, PEG-8, Flavor, Titanium Dioxide, Cocamidopropyl Betaine, Sodium Methyl Cocoyl Taurate, Xanthan Gum, Sodium Hydroxide, Sodium Saccharin, Sucra2lose.