Psyllium Overdose During Bowel Preparation Leading to Pneumatosis Intestinalis.

Bowel preparation for colonoscopy can lead to severe complications if mismanaged. We present a case of a 53-year-old man who developed small bowel obstruction and pneumatosis intestinalis due to a medication error, confusing polyethylene glycol with psyllium. While generally safe, psyllium is known to cause obstruction if ingested in large quantities. While the patient responded well to conservative treatment, this case demonstrates a serious complication of laxative misuse. Clear patient education is essential for the safety and efficacy of bowel preparation before colonoscopy.