I have alot to say about
Singulair but none of it is good, unfortunately. My son was on
Singulair for 3 yrs. I finally recognized the side effects he was having and discontinued. He suffered from leg pain, stomach pain, irritability, anxiety, quick to tears, easily frustrated and excessively fearful. At the age of 7, his dosage was increased to 5mg. At that point, it became very clear he was suffering side effects. All of the side effects I mentioned above were multipled x 10.