Starting at 6 months, if the water Fluoride
level is less than 0.
3 ppm, Fluoride supplementation of .25 mg/day is recommended. It is important to test the water to be sure as many communities have naturally occurring Fluoride and it may be present despite the fact that it isn't being added to the water. Ada recommendation http://ebd.Ada.Org/contentdocs6327_fluoride_chairside_tool.Pdf.