http://www.medications.com/effect/view/30169 I forgot to add my son was also on zyrtec & claritin b4 singulair & they caused similar side effects as singulair but not nearly as severe & I didn't realize all this till after I stopped the singulair & started looking up all the old meds. he was on Fri, 09 May 2008 08:38:35 -0400 http://www.medications.com/effect/view/30169?item=8131 claritin and zyrtec too?? My son was on zyret for about 4 years- had many emotional problems (low self esteem, anxiety) I attribute to the "tween age" thanks! http://www.medications.com/effect/view/30169?item=8131 Fri, 09 May 2008 08:59:11 -0400 http://www.medications.com/effect/view/30169?item=8132 I'm not 100% sure but I have reason to suspect that now since these last 3 yrs have been worse than ever & he was on allergy meds that whole time!! he can no longer be on ANY of them!! we're sticking to Flonase Only right now GL to u http://www.medications.com/effect/view/30169?item=8132