in 6 patients with inactive ulcerative colitis , the colonic metabolism of sulfasalazine and azodisalicylate was studied by equilibrium in vivo dialysis of feces to measure the therapeutically relevant concentrations of their metabolites ( 5-aminosalicylic acid and n-acetyl-5-aminosalicylic acid ) in free fecal water .
C0009324
ulcerative colitis
C0036078
sulfasalazine