http://www.medications.com/effect/view/32949 My daughter who just turn 7 has been on and off Zyrtec for the past 6 months. This last time it finally clicked... She was on it for about 3-4 weeks and I notice her mood changed and she was now very angry at anything and started hitting her sibblings and Mon, 01 Sep 2008 14:15:46 -0400 http://www.medications.com/effect/view/32949?item=11844 Several years ago my daughter took singulair - with similar problems. She was six and started talking about how no one in the family liked her, etc. It was so out of character. I took her off it after doing some research and she has been a happy carefre http://www.medications.com/effect/view/32949?item=11844 Thu, 11 Sep 2008 16:01:59 -0400 http://www.medications.com/effect/view/32949?item=12273 My daughter was on Singulair for three years and she exhibited many of the same side effects. She committed suicide in 2003 before the link to behavior and mood disturbances to Singulair was discovered. Go to the Singulair site and read what has been poste http://www.medications.com/effect/view/32949?item=12273 Tue, 25 Nov 2008 10:29:14 -0500 http://www.medications.com/effect/view/32949?item=14817 My son was about 5 years old when we realized that he was having outburst & always whiny. We took him off the Singular for 2 weeks and he was great & pleasant. Then a few week later we put him back on to see if it was the meds & sure enough outburst & whin http://www.medications.com/effect/view/32949?item=14817 Sun, 15 Mar 2009 16:36:44 -0400 http://www.medications.com/effect/view/32949?item=18052 I just read your email. My 8 year old son was in the E.R. and spent 2 days of the pediatric IUC center here at El Paso last weekend. . He also suffers asthma, and he has been in Zyrtec, Singular for over 4 years. The reason why he ended up in the hospi http://www.medications.com/effect/view/32949?item=18052