#1 dentist recommended brand for sensitive teeth.ToothpasteGlaxosmthklnActive Ingredients:Potassium Nitrate (5%)*; Sodium Fluoride (0.15% W/V Fluoride Ion); *Maximum FDA Sensitivity Active IngredientAdults and children 12 years of age and older: Apply at least a 1-inch strip of the product onto a soft bristle toothbrush. Brush teeth thoroughly for at least one minute, preferably after each meal or at least twice a day (morning and evening) or as recommended by a dentist or physician. Make sure to brush all sensitive areas of the teeth. Children under 12 years of age: Consult a dentist or physician. Store below 30 degrees C (86 degrees F).Inactive Ingredients:FD&C Blue #1 Lake; Flavor; Glycerin; Hydrated Silica; Sodium Benzoate; Sodium Hydroxide; Sodium Lauryl Sulfate; Sodium Saccharin; Sorbitol; Titanium Dioxide; Water; Xanthan GumUses:Builds increasing protection against painful sensitivity of the teeth due to cold, heat, acids, sweets, or contact; aids in the prevention of dental cavities. Use Sensodyne whenever you normally brush: It contains Potassium Nitrate clinically proven to reduce painful sensitivity. It provides fast relief within two weeks. It has fluoride for cavity protection. Its formula keeps breath feeling fresh for hours. It has a great tasting mint flavor. This product contains no sugar.If pain/sensitivity still persists after 4 weeks of use, please visit your dentist. Stop use and ask a dentist if the problem persists or worsens. Sensitive teeth may indicate a serious problem that may need prompt care by a dentist. Keep out of reach of children. If more than used for brushing is accidentally swallowed, get medical help or contact a Poison Control Center right away.