Clinical Research Directory

A Pilot Study of Commercially Available Bowel Preparation Regimens Packaged and Ingested Via Vegan Capsules

The goal of this clinical trial is to learn whether bowel preparation powders used before colonoscopy can be taken as capsules instead of being mixed and drunk as a liquid. Bowel preparation is the medicine people take to clean the bowel before a colonoscopy. This study will include adults aged 18 to 75 years who are already scheduled for an outpatient colonoscopy and who have had a colonoscopy before. The main questions this study aims to answer are: 1. Can participants swallow and complete a large number of bowel preparation capsules with the required clear fluids? 2. Can the capsules be prepared accurately and practically by a pharmacy or by participants at home? 3. Is the capsule-based bowel preparation safe and well tolerated? 4. Does the capsule-based bowel preparation clean the bowel well enough for colonoscopy? Participants will take approved bowel preparation products, Pico-Salax or Bi-PegLyte, in vegan hydroxypropyl methylcellulose capsules. They will take the capsules with clear fluids using a split-dose schedule before colonoscopy. The study will happen in three parts. First, researchers will test two capsule sizes using Pico-Salax capsules prepared by a partner pharmacy. Then, researchers will test Bi-PegLyte capsules using the capsule size selected from the first part. Finally, some participants will prepare the capsules themselves at home using study instructions and materials. Researchers will measure how many capsules and how much fluid participants complete, symptoms during preparation, safety blood tests, participant satisfaction, and bowel cleanliness during colonoscopy.