I had a bravo; the capsule is inserted during endoscopy, I remember having a sensation of some sort afterwards, but it was minor and caused no problems. I was on and off meds for the 24 ph (depending on which time), but the bravo I had off meds. I remember wondering the same thing when having tests while on, but they have their reasons I guess!!
In any event, the bravo wasn't a big deal, far easier than the 24 PH and I flunked both...with flying colors!!!