Laura - posted on 03/30/2012 ( 1 mom has responded )
My child was placed on Singulair last week for allergies, and began having visions of ghosts/shadows and became terrified to be left alone night or day. I know the drug can have side effects of sleeplessness, nightmares, hallucinations, suicidal thoughts; I have been on Singulair for 8 years and have never had an issue. We took him off yesterday, he was only on it for a week. Just hoping these visions will fade quickly!