stannous fluoride 0.454% (0.15% w/v fluoride lon)............. uses aids in the prevention of cavities helps prevent gingivius helps interfere with harmful effects of plaque associated with gingivitis builds increasing protection against painful conc of the teeth to cold, heat, acids, sweets, or contact ● warnings. when using this product for sensitivity, do not use longer than 4 weeks unless recommended by a dentist. stop use and ask a centist if the sensitivity 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. stop use and ask a dentist if gingivitis, bleeding, or redness persists for more than 2 weeks you have painful or swollen gums, pus from the gum line, loose teeth, or increasing spacing between the teeth. these may be signs of periodontitis, a serious form of gum disease. directions adults and children 12 years of age and older: apply at least a 1-inch strip of the product onto a soft bristled toothbrush. brush teeth thoroughly for at least 1 minute twice a day (morning and evening) or as recommended by a dentist. make sure to brush all sensitive areas of the teeth. do not swallow. children under 12 years of age: consult a dentist. other information products containing stannous fluoride may produce surface staining of the teeth. adequate toothbrushing may prevent these stains which are not harmful or permanent and may be removed by your dentist. this colgate product is specially formulated to help prevent staining.