http://www.medications.com/effect/view/29994 My 5 year old son was taking Singulair for about 2 years when I came upon this site. I immediately called his allergist and got no answers, so I decided to take him off of it. Within 24 hours I noticed a big difference. He use to not sleep. He would be u Mon, 28 Apr 2008 11:17:37 -0400 http://www.medications.com/effect/view/29994?item=7699 This site has been a blessing for many people! Glad your getting your sweet boy back! If you would like to join a support group started for members here you can join us at http://health.groups.yahoo.com/group/Singulair_side_effects_friends/ Hope to see http://www.medications.com/effect/view/29994?item=7699 Mon, 28 Apr 2008 11:28:21 -0400 http://www.medications.com/effect/view/29994?item=7701 My 8 year old son was just put on the same regimen of Zyrtec in the morning and Singulair at night. It has been one week and I have not noticed any side effects. In fact he is sleeping better than before. However I am concerned because of all that I hav http://www.medications.com/effect/view/29994?item=7701