This registry is a place to share positive or negative side effects of using Singulair. If you directly experienced a side effect while using Singulair, then we encourage you to enter it here. Please note that entries here are the experiences of individual users, and in no way means that you or anyone else will experience the same side effect, since the same medication affects people in different ways. Please always contact your physician.
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May 15th
2007
5:00 PM
My daughter is 5 years old and has been on singulair for 1 week. i have already noticed a dramatic change in her behavior. she has become irritable, mean, nasty, and emotional. she has had me in tears on a daily basis. she has turned into a monster. we will be calling the doctor in the morning!
-- By lessa621 | Reply | (45) replies | Private Message me