This was a prospective , double-blind , parallel , randomized study of 4 doses of PEG 3350 ; 0.25 g/kg per day , 0.5 g/kg per day , 1 g/kg per day , 1.5 g/kg per day , given for 3 days in children with constipation for > 3 months and evidence of fecal impaction .
