http://www.medications.com/effect/view/29158 UPDATE:It is now a week since my 6 yr old son stopped taking singulair. My happy boy is back! He has now had a second day in a row with positive reports from school. These are the first 2 positive days of the entire school year!!! Its no mystery anymore! I Fri, 04 Apr 2008 20:12:05 -0400 http://www.medications.com/effect/view/29158?item=6676 i am so happy your son is doing better. i made the connection back in march 2007. my son was also 6 yrs old. he had been on singulair for 3 yrs. he made an amazing recover after 3 weeks. he had suffered from anxiety, fear, irritability, self doubt, ni http://www.medications.com/effect/view/29158?item=6676