What pill is yellow round with 230 on one side

A round yellow pill with the imprint 230 on the front is 5mg of Bisacodyl (made by Purdue Pharma).

Bisacodyl is a laxative that is used to treat bowel preparation, and constipation. There is a low risk of abuse with this drug, and this medication is not proven to be a risk to an unborn fetus.

A 6th grade student in Delton, Michigan pulled a dangerous prank at the Delton Kellog Middle School in October 2012, lacing brownies that he brought to school with laxatives. The student has been suspended from school, and police are investigating the incident.

Sunday, November 11 2012
Source: http://www.drugs.com/imprints/230-13487.html