http://www.medications.com/effect/view/36557 my 6yr old daughter was put on singulair at the age of 4 she had a reaction to nuts and had the allergy testing she was put on singulair and claritin and nasacort .(so she has been on the medication now for 14 months) about 3and 1/2 weeks ago she quit eatin Thu, 13 Nov 2008 21:37:01 -0500 http://www.medications.com/effect/view/36557?item=14462 I'm so glad you found this site! A dramatic change in appetite can be a warning sign of depression and depression is a possible side effect of Singulair. So are agression.and suicidal thoughts. Other parents have reported similar behavior in their children http://www.medications.com/effect/view/36557?item=14462 Fri, 14 Nov 2008 08:31:44 -0500 http://www.medications.com/effect/view/36557?item=14473 Our daughter ended up experiencing many bad "side effects" on Singulair, but Claritin has been fine. They are very different meds - the latter is just an antihistamine. Good luck! http://www.medications.com/effect/view/36557?item=14473 Sun, 16 Nov 2008 16:29:23 -0500 http://www.medications.com/effect/view/36557?item=14556 my son complained of stomach upset, and also had nightmares. he had a great appetite as a baby, then lost interest in food. he was put on singulair in kindergarten. he did not eat anything beyond pasta and cereal for years. after i took him off singulair ( http://www.medications.com/effect/view/36557?item=14556