My daughter of 3 years is using singulair, clarinex and cough medicine for her asthma and she is having changing in her behavior she doesn't sleep start screaming and is aggressive. we link this with the cough medicine but know I heard this about the singulair can this be link.
My son was on Singulair for 3 years. Nightmares, dark circles under the eyes. ADHD behavior. Took him off of in Kindergarden cause they wanted him tested for ADHD. Within 2 weeks he was fine. Singulair can cause bad side effects for some!