Why can I have cranberry juice but not red Jell-o or Kool Aid during a preparation?
A. Jell-0 and Kool Aid have artificial colors that may discolor the fluid in the colon and give the appearance of blood in the colon. Cranberry juice doesn’t have artificial coloring so it won’t discolor the preparation. Other fruit juices that are not red or other types of Jello are acceptable to take on the day of the preparation.