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Can Fluoride Cause Harm?
As with other compounds, fluoride is safe and effective when used properly, but it can be hazardous at high doses. All water-fluoridation systems are checked daily to maintain safe fluoride levels. Parents should supervise the use of all fluoride products in the home.
Fluoride-supplement tablets should be stored safely away from young children. These supplements are taken each day in small quantities, ranging from 0.25 to 1 milligram per day based on the child's age and amount of fluoride in the water. Dentists limit the amount of tablets they prescribe at one time because the toxic dose of fluoride for a 2-year-old child weighing 22 pounds is 320 milligrams. To avoid any chance of overdose, do not stock up on fluoride tablets. If you have any questions regarding fluoride risks, talk to your dentist or physician.
Toxic fluoride doses are based on weight, and a toxic dose of fluoride for an 8-year-old child weighing 45 pounds is 655 milligrams. In comparison, an 8-ounce glass of water fluoridated to 1 part per million contains 0.25 milligrams of fluoride. Since these fluoride products are used in such small amounts, it is very difficult to receive toxic doses when using fluoride products at home.