FYI--Prilosec is not the "purple pill" so you're insecurities and suggestions with regards to it were misguided. Nexium in the "purple pill" which you were looking to point blame on, but beings it isn't the prescribed medication your wife was taking, you have misguided your anger. Do your research before you cause an uproar amongst people who really desire to find the true casue of their medical problems.
Oh...and I don't recall peanuts being a part of the "roughage" category. I would recommend keeping him away from lettuce instead.
While I do empathize with your wife's predicament, I can't see how you would blame the manufacturers of Prilosec for what happened to her. Blame the doctor, yes, for not accurately pursuing all possible etiologies of epigastric discomfort on the differential diagnosis...but it's well known by physicians that proton-pump inhibitors may mask symptoms of conditions that are not GERD, which comprises a further reason that your wife's doctor should have taken a more skeptical eye toward her symptoms. But it's not the fault of the manufacturer that their drug was poorly utilized by the physician.
Prilosec (and it's younger and more over-achieving brother, Nexium) are very good drugs for patients that do indeed have GERD (by preventing esophagitis and possible metaplasia of the esophagus which may eventually lead to cancer). But while the drug is heavily promoted, it is not promoted for treatment of gallbladder disease since it is of course not indicated for such. Again, the manufacturer is not to blame for poor judgement on the part of the physician.