I have noticed lately when I eat, my esophagus will go into spasms. The pain in my chest area is so tremendous I have to hold my chest. It feels like it may be twisting, but I don't know what its doing. It will bend you double. It doesn't last long but long enough to think you are going to die if it doesn't let up. I never noticed this before I began taking Mestinon. All it has to take is a spoonful of food. Does anyone else have this problem? Is it a problem with maybe weak muscles? It does not happen every time I eat, but often. Just wondering if anyone else has this problem and what was your solution. busy