You have gotten some good info about MREs and I have had TONS. They are definitely my doctor's go-to whenever I am flaring because they don't use radiation. A few tricks I have acquired:
1. If you are a woman on the thinner side, you really don't need to drink as many of those contrast drinks as they say. I have taken to refusing after the second and it has never ruined the scan (I am 5'6" and weigh 120-125 lb). Furthermore, I have found that drinking less really makes the scan more bearable because I don't feel like I have to pee 10 minutes into it. Also, you don't feel as crappy afterwards.
2. You can request a mild sedative, like a Xanax or Ativan, from you GI (he will have to prescribe it and you pick it up from the pharmacy before going for the scan) and take it 30 minutes before the scan. This was AMAZING for me the last scan I had. I don't get anxiety with the scans, but find it very hard to lie still for that long. It's almost like my limbs start moving involuntarily and it drives me crazy. The last time, when I took a xanax prior, I almost fell asleep a few times. Only down-side is that you need to make sure you have a ride home.
3. Get a ride if you can even if you don't take a sedative. That contrast makes you feel awful after and driving myself home was always horrible feeling like that. Especially having to pull over to throw up (this only happened once) or stop several times to use a bathroom.
4. Even if you don't feel well, try to eat and drink as much as possible after the scan in order to flush everything out of you. Drink tons of water for the rest of the day.
Hope this helps!
32 year old female with a husband and son.
Diagnosed with CD in January of 2005.
Back on Humira.
Past Meds: 6MP, Humira, Remicade, & Cimzia.