My son's been on Singulair for 4 years (he's almost 12 now) and his mood swings appear MILDER because of it...has this ever been heard of? At first, when he was put on it, I was only having him take it once/day for few months in spring then in fall, when allergies would act up, but he had his usual mood swings (as he did before going on this med). After a year of that, and the doctor saying to keep him on it year-round, his mood swings seem milder.... any others notice this....?
Just Curious Mom


