“…Magnesium oxide demonstrates a laxative action, which should shorten the dwelling time of CPT-11 and SN-38 within the intestine. The intestinal alkalization has succeeded in reducing late diarrhea by CPT-11 in pleural studies 14,[21][22][23][24] . We previously conducted a phase I/II study of biweekly CPT-11 with CDDP without the intestinal alkalization 9) .…”