Table III. Dietary fluoride supplement schedule
Approved by the American Dental Association, American Academy of Pediatrics, American Academy of Pediatric Dentistry
Age Fluoride ion level in drinking water (ppm)*
  Less than 0.3ppm 0.3-0.6 ppm Greater than 0.6 ppm
Birth-6 months None None None
6 months-3 years 0.25 mg/day** None None
3-6 years 0.50 mg/day** 0.25 mg/day None
6-16 years 1.0 mg/day 0.50 mg/day None
*0.1 part per million (ppm) = 1 milligram/liter (mg/L)
**2.2 mg sodium fluoride contains 1 mg fluoride ion