Fluoride content in caffeinated, decaffeinated and herbal teas

Caries Res. 1996;30(1):88-92. doi: 10.1159/000262142.


The fluoride contents of infusions prepared from 44 different brands and types of teas were measured. Fluoride concentrations ranged from 0.34 to 3.71 ppm (mean = 1.50 ppm) in caffeinated tea infusions, 0.02-0.14 ppm (mean = 0.05 ppm) in herbal tea infusions, and 1.01-5.20 ppm (mean = 3.19) in decaffeinated tea infusions. This is the first report of the fluoride content of decaffeinated teas. The mean fluoride content of decaffeinated tea infusions is significantly (p < 0.01) higher than the corresponding caffeinated tea. The use of mineral water containing a naturally high fluoride level during the process of decaffeination is the most likely explanation of the above observation.

MeSH terms

  • Beverages / analysis
  • Caffeine
  • Fluorides / analysis*
  • Magnoliopsida / chemistry
  • Mineral Waters
  • Tea / chemistry*


  • Mineral Waters
  • Tea
  • Caffeine
  • Fluorides