Impact of PEG Bowel Preparation on Gut Microbiome Composition Recovery

"Volunteers will be administered 4L of PEG bowel preparation. The following instructions will be provided with the prescription:~1. Fill the supplied container containing the bowel cleanse powder with lukewarm water (to facilitate dissolution) to the 4-liter fill line. The solution is clear and colourless when reconstituted to a final volume of 4 liters.~2. After capping the container, shake vigorously several times to ensure that the ingredients are dissolved. The solution is more palatable if chilled prior to drinking. When reconstituted use within 48 hours.~3. Attempt to drink a maximum of 4 liters at a rate of 240 mL (8 oz.) every 10 minutes, until 4 liters has been consumed or the rectal effluent is clear. Rapid drinking of each portion is preferred to drinking small amounts continuously.~4. The first bowel movements should occur approximately one hour after the start of bowel cleanse administration. Continue drinking until the watery stool is clear and free of solid matter."