Oral microbiota promoting composition

A formulated oral prebiotic edible composition useful for promoting a desired oral microbiota to treat an allergy-related respiratory condition in a subject in need of such treatment comprising:

• a free amino acid containing ingredient comprising L-arginine, the L-arginine comprised of free individual molecules of L-arginine present at a concentration of greater than about 80 wt %, wherein the free individual molecules of L-arginine present in the composition are maintained in an oral cavity over a period of at least about one hour in an effective amount to treat an allergy-related respiratory condition;
• a carrier, and a sugar comprising at least one of a monosaccharide and disaccharide;
• the composition is suitable to be substantially dissolved within the oral cavity on a daily basis for about 2 days to about 60 days, to thereby selectively promote an increased concentration of selected oral microbiota to thereby treat the allergy-related respiratory condition, the selected oral microbiota comprising Veillonella and Streptococcus.