PerioBiotic? Silver is a toothpaste that features purified silver, coenzymeQ10 (CoQ10), grape seed extract, and Dental-Lac?, a Lactobacillus paracasei probiotic that has been shown in research to help support oral microbial balance and periodontal health. This spearmint-flavored toothpaste contains no fluoride, sulfates, or saccharin. It is also free of BPAs, parabens, synthetic colors, gluten, and synthetic sweeteners. Periobiotic? Silver may help maintain dental and oral health and may support oral microbial balance.