My 4 yr old son was recently put on singulair for his asthma. He...

My 4 yr old son was recently put on singulair for his asthma. He went from being a little boy who settled straight down to sleep at night to a boy who was running around his bedroom very hyper and not being able to sleep at night. After a week of this we started to give him the singulair tablet in the morning and this resulted in him getting in to trouble at school and becoming very aggressive. After 2 weeks he is now completely off singulair and I have my happy little boy back!