Helps reduce plaque that leads to gingivitis; fortifies enamel; helps relieve sensitivity with continued use. Not intended for prevention or treatment of more serious oral conditions. Active Ingredient: Stannous fluoride 0.454%. Aids in the prevention of cavities. Helps prevent gingivitis. Helps interfere with harmful effects of plaque associated with gingivitis. Builds increasing protection against painful sensitivity of the teeth to cold, heat, acids, sweets, or contact.