I came to this forum 2 or 3 weeks ago, looking for a reason for my 17-year-old son's chronic insomnia (every morning, he felt like he had been awake or half-awake all night and was exhausted). I thought maybe he should start taking his Singulair in the morning rather than at night just before bed, and I wanted to see if others had had similar experiences.
I couldn't believe how many of these side effects my son was having! My husband and I had assumed his occasional fits of rage (followed by tears and apologies) and his angst and depression (not severe, thank God, though there were times when he said he hated himself) were just part of being a teenager and possibly helped along by the stresses of high school and impending college. He had been on Zyrtec and Singulair for nearly three years. I had read the labeling when he first started, but of course, Singulair just recently added the warning about depression and suicide.
He stopped taking both medications the same day, and he feels so much better. He's sleeping again, he's more cheerful, more energetic, and much less angst-ridden. He has been going out with our family and with his friends more often, too; he used to just want to stay home in his room.
I'm so glad I did some research.