I realize this post is more than a year old, but it still comes up when searching, so I want to post about the ulcer comment; You do no't have to have surgery to detect ulcers, after gastric bypass surgery. Mine were found with a simple scope. (EGD).
Also, Ibuprofen is not reccomended for patients who have had gastric bypass surgery, but I would ask your Dr. because they may OK it. Naproxen is another that is not reccomended, but my Surgeon said it was OK, when my neurosurgeon wanted to prescribe it for me. I chose Ultram instead, because it is easier on my system, but every body is different and what the tolerate is different, so the best thing to do is ask your bariatric surgeon.
The stomach, that is detatched, is not going to get ulcers, because it is not in use, the (pouch) stomach is made smaller (a pouch) and that is where the food, medicine, etc go through to be digested, so if you get ulcers, that is where they will be; not in the detached part of the stomach, that is no longer in use.