Dr. San probiotic lozenges contain the probiotic strain Lactobacillus rhamnosus SD11, which can optimize the oral microbiome and significantly reduce tooth decay. The lozenges are an innovative oral health product meant to improve dental health in a non-invasive way. Clinical trials showed L. rhamnosus SD11 reduces levels of cavity-causing bacteria in subjects' mouths after consumption. The company believes these probiotic lozenges can significantly impact oral health and the dental industry.