How wonderful to have a post from someone with the same thing as me. I was diagnosed with Esophilic Esophagitus in November of 2006 and have been taking singulair ever since. I must say it has given me relief from the symptoms, however lately I have packed on the pounds with no change in diet or excercise. I've gained 8 pounds in 6 weeks. Not a huge gain, but any gain, I hate. I do have some shaking, but no trouble sleeping or any of the other side effects. I'm trying to weight the pros of no esophagus problems with the cons of weight gain.