A controlled trial of senna preparations and other laxatives used for bowel cleansing prior to radiological examination.

Film quality of PP, X-P and HP methods shows only small differences. 1-day preparation reduces the burden on nursing staff. The standardized sennoside preparations have a good palatability. HP was significantly better than X-P and is safe in diabetic patients. PP gives fewer side effects (cramps) than HP and X-P. Low residue dietary measures are essential for a good result.