I started taking Singulair last Oct. 2006 for allergic asthma. W...

I started taking Singulair last Oct. 2006 for allergic asthma. Within the month, I gained about 15 lbs., & no amount of working out reduced it. I had recently lost a friend/teacher to cancer, & had people staying in my house for all of October. I was a monster, unable to control myself (although I realize the situation was challenging). Over the past year, I often was irritable & have struggled with low immunity. I went on a month long Buddhist retreat in August, got off the stuff, & have felt GOOD. Symptoms have returned since being home, but I'm taking just regular Loratidine & am OK. I feel there is something wrong with Singulair...that it wore down my immune system even more, & was taking a toll in some way. I will not use it again.