<qa>  What is the potential reason for inconsistent improvement in small bowel visualization?A potential reason for inconsistent improvement in small bowel visualization may be due to an inadequate volume of simethicone being delivered into the small bowel, especially the distal portions. Prior volumes of simethicone were small 200 ml and may have pooled in the stomach and become diluted by gastric juices before being delivered into the duodenum. Our hypothesis is that high volume simethicone may overcome this problem and improve small bowel cleansing to facilitate improved visualization during VCE. 