Chlordiazepoxide / clidinium
"I've been taking Clidinium for over 20 years to deal with acid stomach and esophagus spasms.  When eating, I would have the feeling that food was "getting stuck" after just a few bites.  This is the most wonderful drug to deal with my "nervous stomach" so to speak, and also has the side benefit of reducing instances of lower tract issues as well. without cramps.

CVS Caremark is now giving me a hard time covering this medication, saying the problem is that it's not FDA approved, having gone to market in 1966, preceding the FDA.  Actually the real problem is that it's "expensive"!

They suggested 2 other IBS drugs which did nothing for my stomach, and resulted in abdominal cramps.   I'm still fighting but out of room!"