Has anyone on Lisinopril experienced upper GI problems such as...

Has anyone on Lisinopril experienced upper GI problems such as Achalasia, trouble eating, reflux, or getting food 'stuck' in the esophagus? My wife has lost 50 lbs in a year due to inability to eat from what was initially diagnosed as Achalasia (rare disease that affects the operation of the muscles in the esophagus and/or lower esophageal sphincter [LES] at the top of the stomach). However, Botox injections in the LES provided little relief which is not typical for Achalasia patients. She tests negative for Barrett's Syndrome and any form of Connective Tissue Disease (or arthritis). My MD recently put me on Lisinopril (another horror story); while I was researching the drug, I noticed that it could cause muscle weakness. My wife backtracked the date that she was put on Lisinopril and it coincided with the onset of her GI problems. While monitoring her BP several times a day, she has cut back to 1/2 dose and has shown a marked improvement in the last 10 days. (It is too early to say with certainty that Lisinopril is causing the GI problems.) Has anyone experienced similar problems?