Using an enema or a laxative on rare occasions to help ease constipation is not going to cause any permanent damage. However, the repeated use of enemas can, over time, cause problems with the muscles in the intestines. The regular use of enemas can prevent the muscles of the intestine from doing their job properly. You should not need to use enemas to have a bowel movement, and should seek the advice of a physician if you can not move your bowels without a stimulant.
In addition to doing harm to the muscles in the intestine, regular enema use can also lead to a condition called hyponatremia (or water intoxication). Hyponatremia is an imbalance of the electrolytes that occurs when the body does not have enough sodium (salt). Acute hyponatremia can be dangerous and may require treatment with medication or IV fluids.
Never use unapproved enemas without clear guidance from a physician. If you have recently become dependent on enemas to move your bowels, seek advice from your health care provider.
Source:
National Digestive Diseases Information Clearinghouse. "Facts and Fallacies About Digestive Diseases." NIH Publication No. 04–2673 Oct 2003. 16 Feb 2011.
