Featuring Dental-Lac, a patent pending functional lactobacillus dental hygiene probiotic not found in any other toothpaste product. Research on Dental-Lac, a specific Lactobacillus paracasei strain, has shown that it competes with unhealthy strains of oral bacteria including streptococcus mutans, thereby helping to maintain healthy teeth and gums. Like probiotics in the human intestinal tract, beneficial flora in the mouth are critical to maintaining dental and oral health. PerioBiotic toothpaste also contains xylitol and calcium glycerophosphate, two active ingredients that have been shown in research to promote dental and oral health via their cavity-fighting abilities.* What’s not in PerioBiotic does matter… The ingredients not found in PerioBiotic toothpaste, which are found in most other toothpastes include: fluoride, sodium lauryl sulfate (SLS), and saccharin. Also, this product is not harmful if swallowed as it does not contain fluoride.