I had to drink the clear-ish "grape flavored" (yeah right) Barium stuff before my MRE. I actually thought it tasted pretty bad, and it kind of felt like it was expanding in my stomach or something, I had a hard time getting it down. Not trying to scare you, just letting you know it might not be super easy! I thought it was gonna be fine and was NOT prepared for how much of that stuff I would have to drink. They also gave me IV contrast. The worst part, thought, was having to lie in the MRI for what felt like FOREVER because I had to pee soooo bad from drinking all that stuff. I ended up having to get up in the middle because I was about to pee my pants. It was embarrassing, lol. oh well, such is life with Crohn's! Good luck.