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“Without significantly affecting plasma urea concentrations, guar gum reduced by approximately 40% the urinary excretion of endogenous urea for the first 2-h period after the meal (P < 0.01), although endogenous urinary excretion was similar at later stages.”
Research in veterinary science • 1998 | View Paper
“ Guaran in the perfusate (1-7 g/L) inhibited small intestinal absorption of actively transported compounds, such as alpha-methyl-D-glucoside, cycloleucine, and taurocholate, and also of the passively permeating solutes 2-deoxy-D-glucose and urea.”
Journal of colloid and interface science • 2007 | View Paper
“These samplings were continued for 8 h. Guar gum strongly reduced the amino acids (aa) and urea absorption as well as the hepatic production of urea.”