http://www.medications.com/effect/view/41996 My son was on singular about 4 years ago and i thought i noticed irratability, lack of interest and depression, but he was only 4 1/2 at that time and i couldn't tell. It did relieve his allergy symptoms. We took him off at that time. Now, again put him Fri, 12 Jun 2009 06:01:16 -0400 http://www.medications.com/effect/view/41996?item=20544 I hope you take the time to report to the FDA,Thank You http://www.medications.com/effect/view/41996?item=20544