My 16 year old daughter has been taking singulair for the past se...

My 16 year old daughter has been taking singulair for the past several months for exercised induced asthma. It has helped her greatly, no symptoms with exercise. No other drug has had this same result. HOWEVER she has complained of stomach pain, particularly after she eats. We had her checked out for other culprits of stomach problems and came up short. I happened to think that maybe the Singulair may be the problem. We took her off the Singulair a couple of days ago and can already see improvement. I assume this will get better when it is completely out of her system, as most drugs stay in your system for several days or even weeks. I can't believe that I didn't think that singulair being the problem, as we had both had strange not common side effects when we were taking Zyrtec. With Zyrtec we had severe dizziness as well as anxiety and bad feelings. When we initially told our allergist of the side effects of Zyrtec they dismissed us, however since they have had several people complain with these symptoms. Just because a side effect isn't common or listed doesn't mean it can't be. I believe that people with allergies and asthma are highly sensitive and things don't always effect us in the way it would with some other person. We must listen to what our bodies tell us. This site is a great source. It helps us know that we are correct in our self diagnosis.