Calcium Aluminosilicate Anti-Diarrheal in Treating and Preventing Diarrhea in Patients With Metastatic Colorectal Cancer Receiving Irinotecan

RATIONALE: Calcium aluminosilicate anti-diarrheal (CASAD) may help treat and prevent diarrhea caused by irinotecan. It is not yet known whether CASAD is more effective than a placebo in treating and preventing diarrhea in patients receiving irinotecan.
PURPOSE: This randomized phase II trial is studying CASAD to see how well it works compared with a placebo in treating and preventing diarrhea in patients with metastatic colorectal cancer receiving irinotecan.