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Expert Evaluation by Tim Wright DDS, MS <br /> The FDA does not classify fluoride for community water as an "unapproved drug". The FDA <br /> classifies fluoride in drinking water as a contaminant and it is regulated to not exceed a concentration of <br /> 4 ppm (see FDA website: https://www.epa.gov/dwstandardsregulations). Other fluoride compounds <br /> such as those used in toothpaste (e.g. Sodium fluoride, stannous fluoride etc.) are classified and <br /> regulated differently. These fluoride compounds are under FDA regulation using a formulary for <br /> composition and concentration of dental products. <br /> [This space intentionally left blank] <br /> 44 <br />