Hi. My 3-yr-old has been taking Singulair for about a week now and it seems to be helping her allergy symptoms. She is normally mild mannered and layed back, but for the last few days she has been very defiant, loud, and obnoxious. Has anyone else had this experience with Singulair?

Hi,

Yes I took my son off of it (6) because he got crabby, talked back, and was always tired. He also had nightmares. Read the archives, I think someone else posted about this. Apparently the symptoms do go away after longer use, but I didnt chance it. Stopped immediatley.

Good Luck