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“There was a positive association between the lactulose to mannitol ratio and the severity of the eczema (r=0.61, P=.02 after placebo and r=0.53, P=.05 after active treatment).”
“Intestinal permeability, determined from the urinary lactulose/mannitol (L/M) ratio after an oral dose of lactulose and mannitol , was assessed at 4 time points: before the start of the study, and at days 7, 14, and 30 of life.”
JPEN. Journal of parenteral and enteral nutrition • 2006 | View Paper
“ Mannitol reduced intestinal uptake of the poorly absorbed test sugars, lactulose and L-rhamnose; uptake of D-xylose and 3-O-methyl-D-glucose, which are absorbed by carrier-mediated transport largely from the jejunum, was less affected.”