Apparently so. I know it stopped an implant infection from getting worse and healed it. A teaspoon made me herx a little the first time and gave me a slight case of the runs. Take it slow. It works!
Xylitol has been shown to be effective in inhibiting Candida Albicans, a serious systemic yeast problem, and other harmful gut bacteria including H. Pylori, implicated in periodontal disease, bad breath, gastric and duodenal ulcers, and even stomach cancer
/www.naturallysweet.com.au/xylitol-faqs#answer 12