Singulair and perception

I am a 35 year old male, college educated, professional. I started on the Singulair for Asthma three months ago. At first I thought this was a miracle drug, making my Asthma almost disappear. After 3 weeks I noticed a sense of paranoia, always wondering if persons were speaking about me, how my co workers perceived me, worried about my wifes perception of me, my bosses opinion of me, almost totally unbearable. This carried on until I read this sight.

I have been off the drug for almost two weeks, I am beginning to feel better now. Thank you all for the information. To any parent that has a child on this drug: take them of it! As an adult I was going crazy, can't imagine how a child would be.