Singulair Side Effects: I am 47-year old, male. I started taking Singulair about 4 months http://www.medications.com/effect/view/22588 I am 47-year old, male. I started taking Singulair about 4 months ago to treat my allergy. I had very bad running nose and itchy eyes and was sneezing a lot. None of the antihistamines were effective. Amazingly Singulair has been very helpful. I stopped ta The forum where I first learned of it has many people who take it Tue, 04 Sep 2007 22:18:02 -0400 http://www.medications.com/effect/view/22588?item=1601 The forum where I first learned of it has many people who take it with no trouble. Here you are reading about people who HAVE problems with it, this doesn't mean everyone has problems with it. If it works and you have no (or minor) side effect I would keep http://www.medications.com/effect/view/22588?item=1601 My daughter has seasonal allergies. Most allergy medications mak Sat, 29 Mar 2008 10:35:31 -0400 http://www.medications.com/effect/view/22588?item=6138 My daughter has seasonal allergies. Most allergy medications make her hyper. She has taken Cingulair for three years only during allergy season. She is now twelve. We have never seen any mood changes in her. Our pediatrician is very conservative about http://www.medications.com/effect/view/22588?item=6138