Xylitol may inhibit the growth of bacteria that causes ear and nasal infections. The sugar replacement appears to keep Streptococcus pneumoniae from attaching to tissue and building colonies. Thus, xylitol boosts the efficacy of ear and nasal sinus infection treatments such as nasal irrigation. Clinical research has found that up to four in ten children who were given xylitol in gum or syrup experienced fewer middle ear infections.

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