My Child was taking only Singulair for several years for asthma and after going to a pediatric allergist, she was put on Pulmicort Respules, which is an Inhaled Corticosteroid. She was experiencing some anxiety and bad dreams, but she was also still having symptoms. Her nighttime awakenings are almost non-existent now and she is able to run and play like a normal child. She is also having no more anxiety! The doctor told us that these drugs control the inflammation in the lungs, and that's why kids have asthma attacks. All of these inhaled steroids are safe and tested in children, so I feel comfortable giving it to her every night before bedtime. The allergist told us that inhaled steroids alone will control all asthma and wheezing and there is no need to use Singulair. You may want to look into this type of medication instead of Singulair