eosinophilic esophagitis
"I have an unexplained food allergy that causes my esophagus (only esophagus) to close up completely with food in it.  Cannot swallow saliva, as it builds up and makes me gag and choke as it goes down my windpipe when it builds up high enough.  I was instructed to take 9mg (3, 3mg capsules)  by removing the pellets from the capsules and eating them without water so they touch my esophagus directly.  No side effects that I notice and it makes me able to eat. A God send - a must have for me.  "